bluedroid: Fix build with gcc 4.8

In gcc 4.8, the warning for unused parameters is enabled by
default - causing -Werror to break the build.

Change-Id: Ifa4dbc6a7cfec0c82486906ecf3ed6d53a550c3f
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>

Conflicts:

	gki/Android.mk
	main/Android.mk
Fix build... with improvised bludgeons

Change-Id: I69556f91c1c23c12f232673558e2cf30f0c923f9