power: avs: Fix Kconfig indentation

Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
	$ sed -e 's/^        /\t/' -i */Kconfig
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/power/avs/Kconfig

@@ -13,9 +13,9 @@ menuconfig POWER_AVS
 	  Say Y here to enable Adaptive Voltage Scaling class support.
 
 config ROCKCHIP_IODOMAIN
-        tristate "Rockchip IO domain support"
-        depends on POWER_AVS && ARCH_ROCKCHIP && OF
-        help
-          Say y here to enable support io domains on Rockchip SoCs. It is
-          necessary for the io domain setting of the SoC to match the
-          voltage supplied by the regulators.
+	tristate "Rockchip IO domain support"
+	depends on POWER_AVS && ARCH_ROCKCHIP && OF
+	help
+	  Say y here to enable support io domains on Rockchip SoCs. It is
+	  necessary for the io domain setting of the SoC to match the
+	  voltage supplied by the regulators.