MAINTAINERS: adjust file entry for ARM/APPLE MACHINE SUPPORT

Commit de614ac ("MAINTAINERS: Add entries for Apple PWM driver") adds
an entry for Documentation/devicetree/bindings/pwm/pwm-apple.yaml, but
commit 87a3a39 ("dt-bindings: pwm: Add Apple PWM controller") from
the same patch series actually adds the devicetree binding file with the
name apple,s5l-fpwm.yaml.

Adjust the file entry to the file actually added.

Fixes: de614ac ("MAINTAINERS: Add entries for Apple PWM driver")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20230424114043.22475-1-lukas.bulwahn@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: bulwahn

MAINTAINERS

@@ -1961,7 +1961,7 @@ F:	Documentation/devicetree/bindings/nvmem/apple,efuses.yaml
 F:	Documentation/devicetree/bindings/pci/apple,pcie.yaml
 F:	Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml
 F:	Documentation/devicetree/bindings/power/apple*
-F:	Documentation/devicetree/bindings/pwm/pwm-apple.yaml
+F:	Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml
 F:	Documentation/devicetree/bindings/watchdog/apple,wdt.yaml
 F:	arch/arm64/boot/dts/apple/
 F:	drivers/bluetooth/hci_bcm4377.c