Suppress unused parameter warnings

Change-Id: Ibb3fc68726fbea174ce1c499bcca2a9b6cfbfd5d
Reviewed-on: https://swiftshader-review.googlesource.com/3149
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Greg Hartman <ghartman@google.com>
diff --git a/src/OpenGL/libGLES_CM/Android.mk b/src/OpenGL/libGLES_CM/Android.mk
index e2d7b28..c10ce18 100644
--- a/src/OpenGL/libGLES_CM/Android.mk
+++ b/src/OpenGL/libGLES_CM/Android.mk
@@ -10,7 +10,8 @@
 	-DEGLAPI= \
 	-DGL_API= \
 	-DGL_APICALL= \
-	-DGL_GLEXT_PROTOTYPES
+	-DGL_GLEXT_PROTOTYPES \
+	-Wno-unused-parameter
 
 
 COMMON_SRC_FILES := \