pm2fb: Permedia 2V memory clock setting

Permedia 2V uses its own registers to set a memory clock. The
patch adds these registers and uses them in the set_memclock()
function.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/video/permedia2.h b/include/video/permedia2.h
index b95d362..9e49c95 100644
--- a/include/video/permedia2.h
+++ b/include/video/permedia2.h
@@ -154,6 +154,10 @@
 #define PM2VI_RD_CLK1_PRESCALE				0x204
 #define PM2VI_RD_CLK1_FEEDBACK				0x205
 #define PM2VI_RD_CLK1_POSTSCALE				0x206
+#define PM2VI_RD_MCLK_CONTROL				0x20D
+#define PM2VI_RD_MCLK_PRESCALE				0x20E
+#define PM2VI_RD_MCLK_FEEDBACK				0x20F
+#define PM2VI_RD_MCLK_POSTSCALE				0x210
 #define PM2VI_RD_CURSOR_PALETTE				0x303
 #define PM2VI_RD_CURSOR_PATTERN				0x400