drivers misc: add okl4-link-shbuf driver

A simple driver for using a shared-memory bridge between two
VMs.

Change-Id: I3dac6dd88d1f658c95e799262a9720a44af00291
Signed-off-by: Carl van Schaik <carl@cog.systems>
Git-commit: 18b0192bb16d90974af0401f1a46f20f0f5b9502
Git-repo: https://github.com/CogSystems/linux-msm.git
Signed-off-by: Minming Qi <mqi@codeaurora.org>
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 8e5d0f6..6494a66 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -80,3 +80,5 @@
 targets += lkdtm_rodata.o lkdtm_rodata_objcopy.o
 $(obj)/lkdtm_rodata_objcopy.o: $(obj)/lkdtm_rodata.o FORCE
 	$(call if_changed,objcopy)
+
+obj-$(CONFIG_OKL4_LINK_SHBUF)    += okl4-link-shbuf.o