Android: disable unused-parameter warning

Android builds with -Wunused-parameter enabled which results in spewing
lots of warnings. Disable it so more meaningful warnings are more visible.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
diff --git a/Android.common.mk b/Android.common.mk
index 72fa5d9..c4823f7 100644
--- a/Android.common.mk
+++ b/Android.common.mk
@@ -32,6 +32,7 @@
 MESA_VERSION := $(shell cat $(MESA_TOP)/VERSION)
 # define ANDROID_VERSION (e.g., 4.0.x => 0x0400)
 LOCAL_CFLAGS += \
+	-Wno-unused-parameter \
 	-DPACKAGE_VERSION=\"$(MESA_VERSION)\" \
 	-DPACKAGE_BUGREPORT=\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\" \
 	-DANDROID_VERSION=0x0$(MESA_ANDROID_MAJOR_VERSION)0$(MESA_ANDROID_MINOR_VERSION)