lib: move notify_rpc under lib/notify

This is part of a larger series aimed at simplifying/flattening the
directory structure of the SPDK lib directory. The ultimate goal of this
series is to properly create dynamic linker dependencies between all
spdk shared objects.

Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/465209 (master)

(cherry picked from commit ef6108a7eb)
Change-Id: I6beb7103404ae2c24a3d25dd93a1061680c7176c
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/466973
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

lib/event/rpc/Makefile

@@ -34,7 +34,7 @@
 SPDK_ROOT_DIR := $(abspath $(CURDIR)/../../..)
 include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
 
-C_SRCS = app_rpc.c subsystem_rpc.c notify_rpc.c
+C_SRCS = app_rpc.c subsystem_rpc.c
 LIBNAME = app_rpc
 
 include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk

lib/notify/Makefile

@@ -34,7 +34,7 @@
 SPDK_ROOT_DIR := $(abspath $(CURDIR)/../..)
 include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
 
-C_SRCS = notify.c
+C_SRCS = notify.c notify_rpc.c
 LIBNAME = notify
 
 include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk