soc: fsl: Correct MAINTAINERS database (SOC)

MAINTAINERS lacks of proper coverage for FSL headers. Fix it accordingly.

Fixes: 1b48706f ("MAINTAINERS: add entry for Freescale SoC drivers")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>

MAINTAINERS

@@ -7767,6 +7767,7 @@ F:	Documentation/devicetree/bindings/misc/fsl,dpaa2-console.yaml
 F:	Documentation/devicetree/bindings/soc/fsl/
 F:	drivers/soc/fsl/
 F:	include/linux/fsl/
+F:	include/soc/fsl/
 
 FREESCALE SOC FS_ENET DRIVER
 M:	Pantelis Antoniou <pantelis.antoniou@gmail.com>