Blackfin: boards: add missing "static" to peripheral lists

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-bf533/boards/ip0x.c b/arch/blackfin/mach-bf533/boards/ip0x.c
index 631f051..f869a37 100644
--- a/arch/blackfin/mach-bf533/boards/ip0x.c
+++ b/arch/blackfin/mach-bf533/boards/ip0x.c
@@ -173,7 +173,7 @@
 	},
 };
 
-unsigned short bfin_uart0_peripherals[] = {
+static unsigned short bfin_uart0_peripherals[] = {
 	P_UART0_TX, P_UART0_RX, 0
 };