modules: Add entry for Microchip mpfs hal

Adding entry in kconfig for Microchip mpfs hal

Signed-off-by: Peter McShane <peter.mcshane@microchip.com>
diff --git a/modules/Kconfig.microchip b/modules/Kconfig.microchip
index 2e1e1ab..8c30ae6 100644
--- a/modules/Kconfig.microchip
+++ b/modules/Kconfig.microchip
@@ -4,3 +4,6 @@
 
 config HAS_MEC_HAL
 	bool "Microchip MEC HAL drivers support"
+
+config HAS_MPFS_HAL
+	bool "Microchip MPFS HAL drivers support"