regulator: max77686: Fix MAINTAINER entry to match driver

The max77686 regulator driver was recently renamed to max77686-regulator
but the entry in the MAINTAINERS file wasn't updated to match the driver.

Reported-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

MAINTAINERS

@@ -6913,7 +6913,7 @@ M:	Krzysztof Kozlowski <k.kozlowski@samsung.com>
 L:	linux-kernel@vger.kernel.org
 S:	Supported
 F:	drivers/*/max14577.c
-F:	drivers/*/max77686.c
+F:	drivers/*/max77686*.c
 F:	drivers/*/max77693.c
 F:	drivers/extcon/extcon-max14577.c
 F:	drivers/extcon/extcon-max77693.c