qcacld-3.0: Add config feature CONFIG_WAPI_BIG_ENDIAN

Add configuration feature CONFIG_WAPI_BIG_ENDIAN to
enable or disable BIG ENDIAN WAPI configuration based
on device type.

This was done as newer chipset firmware expects the
WAPI seq in big endian format and to maintain backward
compatibility with the older chipset firmware.

Change-Id: I972ca89e601b706e53408b0751c265d0aa311029
CRs-Fixed: 2746749
diff --git a/Kbuild b/Kbuild
index d6b5fd2..62af178 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2284,6 +2284,7 @@
 cppflags-$(CONFIG_CONVERGED_P2P_ENABLE) += -DCONVERGED_P2P_ENABLE
 cppflags-$(CONFIG_WLAN_POLICY_MGR_ENABLE) += -DWLAN_POLICY_MGR_ENABLE
 cppflags-$(CONFIG_FEATURE_BLACKLIST_MGR) += -DFEATURE_BLACKLIST_MGR
+cppflags-$(CONFIG_WAPI_BIG_ENDIAN) += -DFEATURE_WAPI_BIG_ENDIAN
 cppflags-$(CONFIG_SUPPORT_11AX) += -DSUPPORT_11AX
 cppflags-$(CONFIG_HDD_INIT_WITH_RTNL_LOCK) += -DCONFIG_HDD_INIT_WITH_RTNL_LOCK
 cppflags-$(CONFIG_WLAN_CONV_SPECTRAL_ENABLE) += -DWLAN_CONV_SPECTRAL_ENABLE