Ignore format-pedantic compiler warning

This warning was turned off globally but it is only needed for few
projects. Move the flag to the individual project blueprint files.

Test: presubmit
Change-Id: I55163067ac5038f1650ad12300bf72a48f179b8e

graphics/composer/2.1/utils/hwc2on1adapter/Android.bp

@@ -55,6 +55,7 @@ cc_library_shared {
         "-Wno-shorten-64-to-32",
         "-Wno-sign-compare",
         "-Wno-missing-prototypes",
+        "-Wno-format-pedantic",
     ],
 
     srcs: [