MAINTAINERS: update information of Nuvoton NPCM Platform

Update 'Nuvoton NPCM Platform': 'files' section.

Signed-off-by: Alan Yang <[email protected]>

Author: YTsea88

MAINTAINERS.yml

@@ -3489,6 +3489,8 @@ Nuvoton NPCM Platforms:
     - soc/nuvoton/npcm/
     - boards/nuvoton/npcm*/
     - dts/arm/nuvoton/
+    - drivers/*/*_npcm*
+    - include/zephyr/dt-bindings/*/npcm_*
   labels:
     - "platform: Nuvoton NPCM"