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/tools/env/fw_env.c b/tools/env/fw_env.c
index cd0cc31..f66bd3d 100644
--- a/tools/env/fw_env.c
+++ b/tools/env/fw_env.c
@@ -175,7 +175,7 @@
 	"autoload=" CONFIG_SYS_AUTOLOAD "\0"
 #endif
 #ifdef	CONFIG_ROOTPATH
-	"rootpath=" MK_STR (CONFIG_ROOTPATH) "\0"
+	"rootpath=" CONFIG_ROOTPATH "\0"
 #endif
 #ifdef	CONFIG_GATEWAYIP
 	"gatewayip=" MK_STR (CONFIG_GATEWAYIP) "\0"