Define __ANDROID__ for x86 to be on par with ARM build requirements

Change-Id: I79c8f29af1f20b694f22a39f848216022809a5c6
Signed-off-by: Bruce Beare <brucex.j.beare@intel.com>
diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk
index 0613797..6d123d0 100644
--- a/core/combo/TARGET_linux-x86.mk
+++ b/core/combo/TARGET_linux-x86.mk
@@ -159,7 +159,7 @@
 	$(TARGET_CRTEND_O)
 endef
 
-TARGET_GLOBAL_CFLAGS += -m32
+TARGET_GLOBAL_CFLAGS += -m32 -D__ANDROID__
 TARGET_GLOBAL_LDFLAGS += -m32
 
 endif #simulator