remove armv6 files from armv5 build

Make bilinearfilter_arm.c compiled only when HAVE_ARMV6, as its definitions
are v6 only. This is normally not a problem for static builds as the file
is elided at link time, but this was not being done properly for the
--enable-shared --enable-pic build.

Change-Id: Ic800a7cde751f74f22555c5b247f99f9df5e550d

vp8/encoder/arm/variance_arm.c

@@ -11,9 +11,9 @@
 #include "vpx_config.h"
 #include "vp8/encoder/variance.h"
 #include "vp8/common/filter.h"
-#include "vp8/common/arm/bilinearfilter_arm.h"
 
 #if HAVE_ARMV6
+#include "vp8/common/arm/bilinearfilter_arm.h"
 
 unsigned int vp8_sub_pixel_variance8x8_armv6
 (

vp8/vp8_common.mk

@@ -115,8 +115,6 @@ endif
 
 # common (c)
 VP8_COMMON_SRCS-$(ARCH_ARM)  += common/arm/arm_systemdependent.c
-VP8_COMMON_SRCS-$(ARCH_ARM)  += common/arm/bilinearfilter_arm.c
-VP8_COMMON_SRCS-$(ARCH_ARM)  += common/arm/bilinearfilter_arm.h
 VP8_COMMON_SRCS-$(ARCH_ARM)  += common/arm/filter_arm.c
 VP8_COMMON_SRCS-$(ARCH_ARM)  += common/arm/idct_arm.h
 VP8_COMMON_SRCS-$(ARCH_ARM)  += common/arm/loopfilter_arm.c
@@ -128,6 +126,8 @@ VP8_COMMON_SRCS-$(ARCH_ARM)  += common/arm/dequantize_arm.c
 VP8_COMMON_SRCS-$(ARCH_ARM)  += common/arm/dequantize_arm.h
 
 # common (armv6)
+VP8_COMMON_SRCS-$(HAVE_ARMV6)  += common/arm/bilinearfilter_arm.c
+VP8_COMMON_SRCS-$(HAVE_ARMV6)  += common/arm/bilinearfilter_arm.h
 VP8_COMMON_SRCS-$(HAVE_ARMV6)  += common/arm/armv6/bilinearfilter_v6$(ASM)
 VP8_COMMON_SRCS-$(HAVE_ARMV6)  += common/arm/armv6/copymem8x4_v6$(ASM)
 VP8_COMMON_SRCS-$(HAVE_ARMV6)  += common/arm/armv6/copymem8x8_v6$(ASM)