Fix coverity integer overflow warning

There seemed to be a mismatch in the datatype of argument `eob` in the
functions `warehouse_efficients_txb()`and `av1_get_nz_map_contexts()`,
leading to integer overflow warning. This patch corrects the same.

Fixes Coverity defect CID 560140: Insecure data handling
(INTEGER_OVERFLOW)

Bug: 505436291
Change-Id: Ibd42ca1b38f97b754a8ef26d65b000d8839b7067

av1/common/av1_rtcd_defs.pl

diff --git a/av1/common/av1_rtcd_defs.pl b/av1/common/av1_rtcd_defs.pl
index bd59340..2e7acf3 100644
--- a/av1/common/av1_rtcd_defs.pl
+++ b/av1/common/av1_rtcd_defs.pl
@@ -423,7 +423,7 @@
   # End av1_high encoder functions
 
   # txb
-  add_proto qw/void av1_get_nz_map_contexts/, "const uint8_t *const levels, const int16_t *const scan, const uint16_t eob, const TX_SIZE tx_size, const TX_CLASS tx_class, int8_t *const coeff_contexts";
+  add_proto qw/void av1_get_nz_map_contexts/, "const uint8_t *const levels, const int16_t *const scan, const int eob, const TX_SIZE tx_size, const TX_CLASS tx_class, int8_t *const coeff_contexts";
   specialize qw/av1_get_nz_map_contexts sse2 neon/;
   add_proto qw/void av1_txb_init_levels/, "const tran_low_t *const coeff, const int width, const int height, uint8_t *const levels";
   specialize qw/av1_txb_init_levels sse4_1 avx2 neon/;

av1/encoder/arm/encodetxb_neon.c

diff --git a/av1/encoder/arm/encodetxb_neon.c b/av1/encoder/arm/encodetxb_neon.c
index 8486c76..45e117b 100644
--- a/av1/encoder/arm/encodetxb_neon.c
+++ b/av1/encoder/arm/encodetxb_neon.c
@@ -576,7 +576,7 @@
 
 // Note: levels[] must be in the range [0, 127], inclusive.
 void av1_get_nz_map_contexts_neon(const uint8_t *const levels,
-                                  const int16_t *const scan, const uint16_t eob,
+                                  const int16_t *const scan, const int eob,
                                   const TX_SIZE tx_size,
                                   const TX_CLASS tx_class,
                                   int8_t *const coeff_contexts) {

av1/encoder/encodetxb.c

diff --git a/av1/encoder/encodetxb.c b/av1/encoder/encodetxb.c
index 5e155ab..f0607b6 100644
--- a/av1/encoder/encodetxb.c
+++ b/av1/encoder/encodetxb.c
@@ -277,7 +277,7 @@
 }
 
 void av1_get_nz_map_contexts_c(const uint8_t *const levels,
-                               const int16_t *const scan, const uint16_t eob,
+                               const int16_t *const scan, const int eob,
                                const TX_SIZE tx_size, const TX_CLASS tx_class,
                                int8_t *const coeff_contexts) {
   const int bhl = get_txb_bhl(tx_size);

av1/encoder/x86/encodetxb_sse2.c

diff --git a/av1/encoder/x86/encodetxb_sse2.c b/av1/encoder/x86/encodetxb_sse2.c
index 6ef4bc4..d492367 100644
--- a/av1/encoder/x86/encodetxb_sse2.c
+++ b/av1/encoder/x86/encodetxb_sse2.c
@@ -432,7 +432,7 @@
 
 // Note: levels[] must be in the range [0, 127], inclusive.
 void av1_get_nz_map_contexts_sse2(const uint8_t *const levels,
-                                  const int16_t *const scan, const uint16_t eob,
+                                  const int16_t *const scan, const int eob,
                                   const TX_SIZE tx_size,
                                   const TX_CLASS tx_class,
                                   int8_t *const coeff_contexts) {

test/encodetxb_test.cc

diff --git a/test/encodetxb_test.cc b/test/encodetxb_test.cc
index 1881191..2fd3efd 100644
--- a/test/encodetxb_test.cc
+++ b/test/encodetxb_test.cc
@@ -33,8 +33,8 @@
 using libaom_test::ACMRandom;
 
 using GetNzMapContextsFunc = void (*)(const uint8_t *const levels,
-                                      const int16_t *const scan,
-                                      const uint16_t eob, const TX_SIZE tx_size,
+                                      const int16_t *const scan, const int eob,
+                                      const TX_SIZE tx_size,
                                       const TX_CLASS tx_class,
                                       int8_t *const coeff_contexts);