arm64: mvebu: pinctrl: Add pin control driver for A8K family

Add a DM port of Marvell pin control driver.
The A8K SoC family contains several silicone dies interconnected
in a single package. Every die is normally equipped with its own
pin controller unit.
There are 2 pin controllers in A70x0 SoC and 3 in A80x0 SoC.

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Neta Zur Hershkovits <neta@marvell.com>
Cc: Omri Itach <omrii@marvell.com>
Cc: Igal Liberman <igall@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/pinctrl/mvebu/Makefile b/drivers/pinctrl/mvebu/Makefile
new file mode 100644
index 0000000..f4f7864
--- /dev/null
+++ b/drivers/pinctrl/mvebu/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2016 Marvell International Ltd.
+#
+# SPDX-License-Identifier:	GPL-2.0
+# https://spdx.org/licenses
+
+obj-$(CONFIG_PINCTRL_MVEBU)	+= pinctrl-mvebu.o