Camera: Bring over camera driver changes

Bring over camera driver changes as of msm-4.19
commit  5a5551a7 (Merge "msm: camera: reqmgr: Fix CRM
shift one req issue").

Change-Id: Ic0c2b2d74d1b3470c1c51d98228e312fb13c501a
Signed-off-by: Jigarkumar Zala <jzala@codeaurora.org>

Makefile

@@ -1,4 +1,23 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-ccflags-y := -Wno-unused-function
-obj-y := camera_stub.o
+# auto-detect subdirs
+ifeq ($(CONFIG_ARCH_KONA), y)
+include $(srctree)/techpack/camera/config/konacamera.conf
+endif
+
+# Use USERINCLUDE when you must reference the UAPI directories only.
+USERINCLUDE     += \
+               -I$(srctree)/techpack/camera/include/uapi
+
+# Use LINUXINCLUDE when you must reference the include/ directory.
+# Needed to be compatible with the O= option
+LINUXINCLUDE    += \
+                -I$(srctree)/techpack/camera/include/uapi \
+                -I$(srctree)/techpack/camera/include
+
+ifeq ($(CONFIG_ARCH_KONA), y)
+LINUXINCLUDE    += \
+		-include $(srctree)/techpack/camera/config/konacameraconf.h
+endif
+
+obj-y += drivers/