MAINTAINERS: Update Intel PMIC (MFD part) to Supported

The actual status of the code is Supported.
Reported-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220530120015.70543-1-andriy.shevchenko@linux.intel.com

MAINTAINERS

@@ -10127,7 +10127,7 @@ F:	drivers/gpio/gpio-*cove.c
 
 INTEL PMIC MULTIFUNCTION DEVICE DRIVERS
 M:	Andy Shevchenko <andy@kernel.org>
-S:	Maintained
+S:	Supported
 F:	drivers/mfd/intel_soc_pmic*
 F:	include/linux/mfd/intel_soc_pmic*