regulator: max77802: fix a test in max77802_set_suspend_mode()

The original test triggers a static checker warning.  Javier Martinez
Canillas says that the "!" is a typo and should be removed.

Fixes: 2e0eaa1aa008 ('regulator: max77802: Add set suspend mode for BUCKs and simplify code')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/max77802.c

@@ -179,7 +179,7 @@ static int max77802_set_suspend_mode(struct regulator_dev *rdev,
 	 * If the regulator has been disabled for suspend
 	 * then is invalid to try setting a suspend mode.
 	 */
-	if (!max77802->opmode[id] == MAX77802_OFF_PWRREQ) {
+	if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) {
 		dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n",
 			 rdev->desc->name, mode);
 		return 0;