cnss2: notify wlan fw to stop trace collection

Cnss2 driver receives cnss_pci_smmu_fault_handler cb from smmu
driver whenever wlan fw access illegal IOVA address. In
cnss smmmu fault cb handler, cnss2 driver rings trace stop
door bell register to stop tracing in wlan fw. This will
help to get proper traces to debug where illegal access
is happening in wlan fw.

Change-Id: I953ced55d4d847ccaabad15f5f70150aec8aabd6
CRs-Fixed: 3459443

Kbuild

@@ -60,6 +60,10 @@ ifeq ($(CONFIG_DISABLE_CNSS_SRAM_DUMP),y)
 KBUILD_CPPFLAGS += -DCONFIG_DISABLE_CNSS_SRAM_DUMP
 endif
 
+ifeq ($(CONFIG_CNSS2_SMMU_DB_SUPPORT),y)
+KBUILD_CPPFLAGS += -DCONFIG_CNSS2_SMMU_DB_SUPPORT
+endif
+
 obj-$(CONFIG_CNSS2) += cnss2/
 obj-$(CONFIG_ICNSS2) += icnss2/
 obj-$(CONFIG_CNSS_GENL) += cnss_genl/