video: mmp display controller support

Marvell mmp series display controller support in mmpdisp subsystem.

This driver focus on implementation of hardware operations of
path/overlay, which is defined in mmp display subsystem interface.  This
driver registers all pathes to mmp display framework.
Signed-off-by: Guoqing Li <ligq@marvell.com>
Signed-off-by: Lisa Du <cldu@marvell.com>
Signed-off-by: Zhou Zhu <zzhu3@marvell.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/mmp/Kconfig

@@ -5,5 +5,6 @@ menuconfig MMP_DISP
 	  Marvell Display Subsystem support.
 
 if MMP_DISP
+source "drivers/video/mmp/hw/Kconfig"
 source "drivers/video/mmp/fb/Kconfig"
 endif

drivers/video/mmp/Makefile

-obj-y += core.o fb/
+obj-y += core.o hw/ fb/

drivers/video/mmp/hw/Kconfig

+if MMP_DISP
+
+config MMP_DISP_CONTROLLER
+	bool "mmp display controller hw support"
+	depends on CPU_PXA910 || CPU_MMP2 || CPU_MMP3 || CPU_PXA988
+	default n
+	help
+		Marvell MMP display hw controller support
+		this controller is used on Marvell PXA910,
+		MMP2, MMP3, PXA988 chips
+
+endif

drivers/video/mmp/hw/Makefile

+obj-$(CONFIG_MMP_DISP_CONTROLLER)  += mmp_ctrl.o