automake: gallium/freedreno: drop spurious include dirs

Rather than including two extra folders only for two headers,
just prefix the headers and be done with it.

Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>
Cc: Rob Clark <robclark@freedesktop.org>
Cc: freedreno@lists.freedesktop.org
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>

src/gallium/drivers/freedreno/Makefile.am

@@ -5,8 +5,6 @@ include $(top_srcdir)/src/gallium/Automake.inc
 
 AM_CFLAGS = \
 	-Wno-packed-bitfield-compat \
-	-I$(top_srcdir)/src/gallium/drivers/freedreno/a3xx \
-	-I$(top_srcdir)/src/gallium/drivers/freedreno/a2xx \
 	-I$(top_srcdir)/src/gallium/drivers/freedreno/ir3 \
 	$(GALLIUM_DRIVER_CFLAGS) \
 	$(FREEDRENO_CFLAGS)

src/gallium/drivers/freedreno/freedreno_screen.c

@@ -50,8 +50,8 @@
 #include "freedreno_query.h"
 #include "freedreno_util.h"
 
-#include "fd2_screen.h"
-#include "fd3_screen.h"
+#include "a2xx/fd2_screen.h"
+#include "a3xx/fd3_screen.h"
 
 /* XXX this should go away */
 #include "state_tracker/drm_driver.h"