Don't include system/core/include/arch/<arch>/Android.mk for apps-only build.

Bug: 6994483
Change-Id: I76c4d96264cf94a79d59fdeb52bb37c07a9458dd
diff --git a/core/combo/HOST_linux-x86.mk b/core/combo/HOST_linux-x86.mk
index b369199..cb5f004 100644
--- a/core/combo/HOST_linux-x86.mk
+++ b/core/combo/HOST_linux-x86.mk
@@ -58,8 +58,10 @@
 endif # BUILD_HOST_static
 
 HOST_GLOBAL_CFLAGS += -fPIC
+ifeq (,$(TARGET_BUILD_APPS))
 HOST_GLOBAL_CFLAGS += \
 	-include $(call select-android-config-h,linux-x86)
+endif
 
 # Disable new longjmp in glibc 2.11 and later. See bug 2967937.
 HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0