msm: board: Clean up device declarations

Add 'static' to device declarations within the 8660 and
8960 board files.

Change-Id: I3435fbda413bb21fc0b68a9202d6b45db8b5249e
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-msm8960-display.c b/arch/arm/mach-msm/board-msm8960-display.c
index fb14c86..2acca7e 100644
--- a/arch/arm/mach-msm/board-msm8960-display.c
+++ b/arch/arm/mach-msm/board-msm8960-display.c
@@ -525,14 +525,14 @@
 #endif
 
 #ifdef CONFIG_FB_MSM_HDMI_AS_PRIMARY
-int mdp_core_clk_rate_table[] = {
+static int mdp_core_clk_rate_table[] = {
 	200000000,
 	200000000,
 	200000000,
 	200000000,
 };
 #else
-int mdp_core_clk_rate_table[] = {
+static int mdp_core_clk_rate_table[] = {
 	85330000,
 	85330000,
 	160000000,