opencsd: move ocsd_if_version.h

Move include/oscd_if_version.h to include/opencsd/ocsd_if_version.h
to allow installation and use in application compilation.

Add include of ocsd_if_version to ocsd_c_api_types.h to ensure
version info is in the compile time include hierarchy

Update makefiles to use new ocsd_if_version.h location and install
correctly as library header.

Signed-off-by: Mike Leach <mike.leach@linaro.org>
diff --git a/decoder/build/linux/makefile b/decoder/build/linux/makefile
index 4cd2f5f..f84b057 100644
--- a/decoder/build/linux/makefile
+++ b/decoder/build/linux/makefile
@@ -100,7 +100,7 @@
 export BIN_TEST_TARGET_DIR=$(OCSD_TESTS)/bin/$(PLAT_DIR)
 
 # Fish version out of header file (converting from hex)
-getver:=printf "%d" $$(awk '/\#define VARNAME/ { print $$3 }' $(OCSD_ROOT)/include/ocsd_if_version.h)
+getver:=printf "%d" $$(awk '/\#define VARNAME/ { print $$3 }' $(OCSD_ROOT)/include/opencsd/ocsd_if_version.h)
 export SO_MAJOR_VER := $(shell $(subst VARNAME,OCSD_VER_MAJOR,$(getver)))
 SO_MINOR_VER := $(shell $(subst VARNAME,OCSD_VER_MINOR,$(getver)))
 SO_PATCH_VER := $(shell $(subst VARNAME,OCSD_VER_PATCH,$(getver)))