common: cosmetic: CONFIG_ROOTPATH checkpatch compliance

Remove MK_STR from places that consume CONFIG_ROOTPATH to force all definitions to be string literals.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/configs/aria.h b/include/configs/aria.h
index 0619cf7..33fc5fa 100644
--- a/include/configs/aria.h
+++ b/include/configs/aria.h
@@ -537,7 +537,7 @@
 
 #define CONFIG_HOSTNAME			aria
 #define CONFIG_BOOTFILE			aria/uImage
-#define CONFIG_ROOTPATH			/opt/eldk/ppc_6xx
+#define CONFIG_ROOTPATH			"/opt/eldk/ppc_6xx"
 
 #define CONFIG_LOADADDR			400000	/* default load addr */