qcacld-3.0: Make CONFIG_ICNSS set the bus to SNOC

Currently HIF_PCI and snoc are not supported at the same time.
Bus should be set to snoc when CONFIG_ICNSS is defined.

Change-Id: I900cb70136a9be5406df05d06419e57ca0fa71be
CRs-Fixed: 989686

Kbuild

@@ -6,6 +6,10 @@ else
 	KERNEL_BUILD := 0
 endif
 
+ifdef CONFIG_ICNSS
+	CONFIG_ROME_IF = snoc
+endif
+
 ifeq ($(CONFIG_CNSS), y)
 ifndef CONFIG_ROME_IF
 	#use pci as default interface