pinctrl: Kconfig: sort includes alphabetically

To make adding new subdirectories easier, let's enforce alphabetical
ordering of the includes of Kconfig files in the respective
subdirectories.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index fdc12e0..c2ae758 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -220,14 +220,14 @@
 
 endif
 
-source "drivers/pinctrl/meson/Kconfig"
+source "drivers/pinctrl/broadcom/Kconfig"
+source "drivers/pinctrl/exynos/Kconfig"
 source "drivers/pinctrl/mediatek/Kconfig"
+source "drivers/pinctrl/meson/Kconfig"
+source "drivers/pinctrl/mscc/Kconfig"
+source "drivers/pinctrl/mvebu/Kconfig"
 source "drivers/pinctrl/nxp/Kconfig"
 source "drivers/pinctrl/renesas/Kconfig"
 source "drivers/pinctrl/uniphier/Kconfig"
-source "drivers/pinctrl/exynos/Kconfig"
-source "drivers/pinctrl/mscc/Kconfig"
-source "drivers/pinctrl/mvebu/Kconfig"
-source "drivers/pinctrl/broadcom/Kconfig"
 
 endmenu