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/SBC8540.h b/include/configs/SBC8540.h
index 434b96b..11d564a 100644
--- a/include/configs/SBC8540.h
+++ b/include/configs/SBC8540.h
@@ -425,7 +425,7 @@
 #define CONFIG_GATEWAYIP	YourGatewayIP
 #define CONFIG_NETMASK		255.255.255.0
 #define CONFIG_HOSTNAME		SBC8560
-#define CONFIG_ROOTPATH		YourRootPath
+#define CONFIG_ROOTPATH		"YourRootPath"
 #define CONFIG_BOOTFILE		YourImageName
 
 #endif	/* __CONFIG_H */