gxfb/lxfb: use VSA definitions when fetching framebuffer size

..Rather than using magic constants.

Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Jordan Crouse <jordan.crouse@amd.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/asm-x86/geode.h b/include/asm-x86/geode.h
index 3978200..4fb2f62 100644
--- a/include/asm-x86/geode.h
+++ b/include/asm-x86/geode.h
@@ -109,6 +109,7 @@
 #define VSA_VRC_DATA		0xAC1E
 #define VSA_VR_UNLOCK		0xFC53	/* unlock virtual register */
 #define VSA_VR_SIGNATURE	0x0003
+#define VSA_VR_MEM_SIZE		0x0200
 #define VSA_SIG			0x4132	/* signature is ascii 'VSA2' */
 
 /* GPIO */