bootm: mark local boot_os[] table static

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 32fd9bb..401bf27 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -129,7 +129,7 @@
 static boot_os_fn do_bootm_integrity;
 #endif
 
-boot_os_fn * boot_os[] = {
+static boot_os_fn *boot_os[] = {
 #ifdef CONFIG_BOOTM_LINUX
 	[IH_OS_LINUX] = do_bootm_linux,
 #endif