gpt: Add -Wno-format-security

The existing -Wno-format requires it:

error: -Wformat-security ignored without -Wformat [-Werror=format-security]

Change-Id: I9e4177df3437f582b7c71fdaf364ab3b7ced595e
Signed-off-by: D. Andrei Măceș <andrei@unlegacy-android.org>
diff --git a/gpt/Android.mk b/gpt/Android.mk
index bbd71eb..1b694ea 100644
--- a/gpt/Android.mk
+++ b/gpt/Android.mk
@@ -13,7 +13,7 @@
     gpt.c \
     gptcrc32.c
 
-LOCAL_CFLAGS := -Wno-format
+LOCAL_CFLAGS := -Wno-format -Wno-format-security
 
 LOCAL_SHARED_LIBRARIES := libc
 include $(BUILD_SHARED_LIBRARY)