driver core: devtmpfs: fix compile failure with CONFIG_UIDGID_STRICT_TYPE_CHECKS

If CONFIG_UIDGID_STRICT_TYPE_CHECKS is enalbed, the below compile
failure will be triggered:

	drivers/base/devtmpfs.c: In function 'handle_create':
	drivers/base/devtmpfs.c:214:19: error: incompatible types when assigning to type 'kuid_t' from type 'uid_t'
	drivers/base/devtmpfs.c:215:19: error: incompatible types when assigning to type 'kgid_t' from type 'gid_t'
	make[2]: *** [drivers/base/devtmpfs.o] Error 1

This patch fixes the compile failure.
Signed-off-by: NMing Lei <ming.lei@canonical.com>
Cc: Kay Sievers <kay@vrfy.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/devtmpfs.c

@@ -212,8 +212,8 @@ static int handle_create(const char *nodename, umode_t mode, uid_t uid,
 		struct iattr newattrs;
 
 		newattrs.ia_mode = mode;
-		newattrs.ia_uid = uid;
-		newattrs.ia_gid = gid;
+		newattrs.ia_uid = KUIDT_INIT(uid);
+		newattrs.ia_gid = KGIDT_INIT(gid);
 		newattrs.ia_valid = ATTR_MODE|ATTR_UID|ATTR_GID;
 		mutex_lock(&dentry->d_inode->i_mutex);
 		notify_change(dentry, &newattrs);