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/RPXlite_DW.h b/include/configs/RPXlite_DW.h
index 7b561cb..62c3fda 100644
--- a/include/configs/RPXlite_DW.h
+++ b/include/configs/RPXlite_DW.h
@@ -472,7 +472,7 @@
 #define CONFIG_ETHADDR	00:10:EC:00:37:5B
 #define CONFIG_IPADDR	172.16.115.7
 #define CONFIG_SERVERIP 172.16.115.6
-#define CONFIG_ROOTPATH /workspace/myfilesystem/target/
+#define CONFIG_ROOTPATH "/workspace/myfilesystem/target/"
 #define CONFIG_BOOTFILE uImage.rpxusb
 #define CONFIG_HOSTNAME LITE_H1_DW