ARM: meson: rename GXBB to GX

Taking into account the Amlogic Family name starts with GX, including
the GXBB, GXL and GXM SoCs.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/arch/arm/mach-meson/sm.c b/arch/arm/mach-meson/sm.c
index 9829bae..0bba5e4 100644
--- a/arch/arm/mach-meson/sm.c
+++ b/arch/arm/mach-meson/sm.c
@@ -6,7 +6,7 @@
  */
 
 #include <common.h>
-#include <asm/arch/gxbb.h>
+#include <asm/arch/gx.h>
 #include <linux/kernel.h>
 
 #define FN_GET_SHARE_MEM_INPUT_BASE	0x82000020