Staging: fbtft: Use !x instead of x == NULL.

Use !x instead of x == NULL. This patch was found by checkpatch.
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fbtft/fbtft_device.c

@@ -1401,7 +1401,7 @@ static int __init fbtft_device_init(void)
 	long val;
 	int ret = 0;
 
-	if (name == NULL) {
+	if (!name) {
 #ifdef MODULE
 		pr_err("missing module parameter: 'name'\n");
 		return -EINVAL;