Use -Wno-format-pedantic to disable overly aggressive format string warning.

Bug: 20148343

The latest clang warns on "%p" being used with non-void pointer types, which
would require a great deal of cleanup in several sub-projects.

Change-Id: I4175d5cf8709504455067c906a2eb8ccc8e25432
diff --git a/core/clang/config.mk b/core/clang/config.mk
index 13a5ba1..3bc7b56 100644
--- a/core/clang/config.mk
+++ b/core/clang/config.mk
@@ -49,6 +49,11 @@
 CLANG_CONFIG_EXTRA_CFLAGS += \
   -Wno-reserved-id-macro
 
+# Disable overly aggressive warning for format strings.
+# Bug: 20148343
+CLANG_CONFIG_EXTRA_CFLAGS += \
+  -Wno-format-pedantic
+
 # Workaround for ccache with clang.
 # See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
 CLANG_CONFIG_EXTRA_CFLAGS += \