poweroff: add poweroff for mt6323 pmic

this adds poweroff to bananapi r2 / mt7623 / mt6323 pmic

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index cb2c6fe..5910926 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -366,4 +366,11 @@
 	The TWL4030 in a combination audio CODEC/power management with
 	GPIO and it is commonly used with the OMAP3 family of processors
 
+config POWER_MT6323
+	bool "Poweroff driver for mediatek mt6323"
+	select CMD_POWEROFF
+	help
+	  This adds poweroff driver for mt6323
+	  this pmic is used on mt7623 / Bananapi R2
+
 endmenu