iwlwifi: refactor shared mem parsing

Refactor the shared memory command parsing into common code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/Makefile

@@ -11,7 +11,7 @@ iwlwifi-$(CONFIG_IWLDVM) += cfg/1000.o cfg/2000.o cfg/5000.o cfg/6000.o
 iwlwifi-$(CONFIG_IWLMVM) += cfg/7000.o cfg/8000.o cfg/9000.o cfg/a000.o
 iwlwifi-objs		+= iwl-trans.o
 iwlwifi-objs		+= fw/notif-wait.o
-iwlwifi-$(CONFIG_IWLMVM) += fw/paging.o
+iwlwifi-$(CONFIG_IWLMVM) += fw/paging.o fw/smem.o
 
 iwlwifi-objs += $(iwlwifi-m)