OCF: fix compilation dependencies

we don't have dependency files for OCF sources/headers.
for example, if someone 'touch metadata_collision.h'
it will not compile anything.
with this fix, it will compile all the relevant files.

Signed-off-by: Amir Haroush <amir.haroush@huawei.com>
Signed-off-by: Shai Fultheim <shai.fultheim@huawei.com>
Change-Id: I35b1c1f80a60f4be59cdca95f68bbafc7a212774
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17914
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>

lib/env_ocf/Makefile

@@ -16,7 +16,7 @@ include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
 
 LIBNAME := ocfenv
 
-CFLAGS +=  $(ENV_CFLAGS) -I$(CURDIR) -I$(CURDIR)/include -w
+CFLAGS +=  $(ENV_CFLAGS) -I$(CURDIR) -I$(CURDIR)/include -w -MMD
 C_SRCS = $(shell find -name \*.c)
 
 LIB = $(call spdk_lib_list_to_static_libs,$(LIBNAME))
@@ -64,6 +64,8 @@ clean: ocf_distclean
 $(LIB): $(OBJS)
 	$(LIB_C)
 
+-include $(OBJS:.o=.d)
+
 install:
 
 uninstall: