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/debris.h b/include/configs/debris.h
index 60c70eb..8473420 100644
--- a/include/configs/debris.h
+++ b/include/configs/debris.h
@@ -81,7 +81,7 @@
 #undef CONFIG_SYS_AUTOLOAD
 
 /* rootpath */
-#define CONFIG_ROOTPATH /tftpboot/target
+#define CONFIG_ROOTPATH "/tftpboot/target"
 
 /* gatewayip */
 #define CONFIG_GATEWAYIP 192.168.0.1