Fix the build for NEON in libpixelflinger

ARCH_ARM_HAVE_NEON is only ever defined to true, so test for that.
For the NEON function to be used, the file has to include
machine/cpu-features.h so that __ARM_HAVE_NEON is defined.

Change-Id: I0db196b39c493092415859e009531fcff6fc1e8b
Signed-off-by: Kévin PETIT <kevin.petit@arm.com>
diff --git a/libpixelflinger/Android.mk b/libpixelflinger/Android.mk
index c24384c..484cf50 100644
--- a/libpixelflinger/Android.mk
+++ b/libpixelflinger/Android.mk
@@ -34,7 +34,7 @@
 	col32cb16blend.S \
 	t32cb16blend.S \
 
-ifeq ($(ARCH_ARM_HAVE_NEON),armv7-a)
+ifeq ($(ARCH_ARM_HAVE_NEON),true)
 PIXELFLINGER_SRC_FILES_arm += col32cb16blend_neon.S
 endif