Increase stack usage limit with CONFIG_RD_DEBUG.

This avoids a warning due to a slightly higher stack usage.

BUG=aomedia:2428

Change-Id: I17a0e9b0ffac4dc6185573326a292a1b0051fe86
diff --git a/build/cmake/aom_configure.cmake b/build/cmake/aom_configure.cmake
index 1cdff63..60b8692 100644
--- a/build/cmake/aom_configure.cmake
+++ b/build/cmake/aom_configure.cmake
@@ -273,6 +273,9 @@
     # providing higher stack limit than usual.
     add_c_flag_if_supported("-Wstack-usage=170000")
     add_cxx_flag_if_supported("-Wstack-usage=270000")
+  elseif(CONFIG_RD_DEBUG) # Another case where higher stack usage is expected.
+    add_c_flag_if_supported("-Wstack-usage=110000")
+    add_cxx_flag_if_supported("-Wstack-usage=240000")
   else()
     add_c_flag_if_supported("-Wstack-usage=100000")
     add_cxx_flag_if_supported("-Wstack-usage=240000")