Revert "wlan_platform: Update Makefile to build CNSS drivers for Atherton_target"

cnss driver is supposed to be supported across platforms regardless of
CONFIG_PCI_MSM. Hence using CONFIG_PCI_MSM to decide if cnss2 needs to
be compiled is not correct.

This reverts Change-Id: I9ab82aeca945d29d3608e65ecbe69902f8a5b47b.

Change-Id: I1ab90e80694b0e45270f6b47666781d784f8ab76
CRs-Fixed: 3405347

Makefile

@@ -11,14 +11,11 @@ WLAN_PLATFORM_ROOT = $(shell pwd)
 KBUILD_OPTIONS := WLAN_PLATFORM_ROOT=$(WLAN_PLATFORM_ROOT)
 ifeq ($(USE_EXTERNAL_CONFIGS),)
 KBUILD_OPTIONS += CONFIG_CNSS_OUT_OF_TREE=y
-
-ifneq (,$(filter $(CONFIG_PCI_MSM),y m))
 KBUILD_OPTIONS += CONFIG_CNSS2=m
-KBUILD_OPTIONS += CONFIG_CNSS2_QMI=y
-KBUILD_OPTIONS += CONFIG_CNSS2_DEBUG=y
-endif
 KBUILD_OPTIONS += CONFIG_ICNSS2=m
+KBUILD_OPTIONS += CONFIG_CNSS2_QMI=y
 KBUILD_OPTIONS += CONFIG_ICNSS2_QMI=y
+KBUILD_OPTIONS += CONFIG_CNSS2_DEBUG=y
 KBUILD_OPTIONS += CONFIG_ICNSS2_DEBUG=y
 KBUILD_OPTIONS += CONFIG_CNSS_QMI_SVC=m
 KBUILD_OPTIONS += CONFIG_CNSS_PLAT_IPC_QMI_SVC=m