av1: rename highbd_quantize_neon -> av1_highbd_quantize_neon

this avoids a duplicate basename shared with
aom_dsp/arm/highbd_quantize_neon.c

quiets warning in Xcode builds:

XcodeDefault.xctoolchain/usr/bin/libtool: warning same member name
(highbd_quantize_neon.o) in output file used for input files:
AOM.build/Debug/aom_av1_encoder_neon_intrinsics.build/Objects-normal/arm64/highbd_quantize_neon.o
and:
AOM.build/Debug/aom_dsp_encoder_neon_intrinsics.build/Objects-normal/arm64/highbd_quantize_neon.o
(due to use of basename, truncation, blank padding or duplicate input
files)

Change-Id: Id1c2d87c2a1dffca86eaf7d23bb1dcc516082198

av1/av1.cmake

diff --git a/av1/av1.cmake b/av1/av1.cmake
index a1f04f1..b2e90ec 100644
--- a/av1/av1.cmake
+++ b/av1/av1.cmake
@@ -354,7 +354,7 @@
 
 list(APPEND AOM_AV1_ENCODER_INTRIN_NEON
             "${AOM_ROOT}/av1/encoder/arm/neon/quantize_neon.c"
-            "${AOM_ROOT}/av1/encoder/arm/neon/highbd_quantize_neon.c"
+            "${AOM_ROOT}/av1/encoder/arm/neon/av1_highbd_quantize_neon.c"
             "${AOM_ROOT}/av1/encoder/arm/neon/ml_neon.c"
             "${AOM_ROOT}/av1/encoder/arm/neon/picksrt_neon.c"
             "${AOM_ROOT}/av1/encoder/arm/neon/rdopt_neon.c"

av1/encoder/arm/neon/av1_highbd_quantize_neon.c

diff --git a/av1/encoder/arm/neon/highbd_quantize_neon.c b/av1/encoder/arm/neon/av1_highbd_quantize_neon.c
similarity index 100%
rename from av1/encoder/arm/neon/highbd_quantize_neon.c
rename to av1/encoder/arm/neon/av1_highbd_quantize_neon.c