android: dri/common: conditionally include drm_cflags/set __NOT_HAVE_DRM_H

Otherwise we'll fail to find the drm.h header.

Cc: "10.4 10.5" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

src/mesa/drivers/dri/common/Android.mk

@@ -40,6 +40,13 @@ LOCAL_C_INCLUDES := \
     $(intermediates) \
     $(MESA_DRI_C_INCLUDES)
 
+# swrast only
+ifeq ($(MESA_GPU_DRIVERS),swrast)
+LOCAL_CFLAGS := -D__NOT_HAVE_DRM_H
+else
+LOCAL_SHARED_LIBRARIES := libdrm
+endif
+
 LOCAL_SRC_FILES := $(DRI_COMMON_FILES)
 
 LOCAL_GENERATED_SOURCES := \
@@ -99,6 +106,13 @@ LOCAL_MODULE_CLASS := STATIC_LIBRARIES
 LOCAL_C_INCLUDES := \
     $(MESA_DRI_C_INCLUDES)
 
+# swrast only
+ifeq ($(MESA_GPU_DRIVERS),swrast)
+LOCAL_CFLAGS := -D__NOT_HAVE_DRM_H
+else
+LOCAL_SHARED_LIBRARIES := libdrm
+endif
+
 LOCAL_SRC_FILES := $(megadriver_stub_FILES)
 
 include $(MESA_COMMON_MK)