qcacld-3.0: Correctly disable FASTPATH on Lithium

Change "qcacld-3.0: Compile hif_main_legacy file for non-lithium
architecture" (Idd8623612c057380e9bd9704be0538923f37be08) introduced
flawed logic to disable FASTPATH for lithium architecture, so fix the
logic.

Change-Id: I8010c04c7e9e7e4d74dfe1679b0e9b22f5d8ae18
CRs-Fixed: 2342057

configs/default_defconfig

@@ -211,7 +211,7 @@ ifneq ($(CONFIG_ROME_IF),sdio)
 	CONFIG_WLAN_FEATURE_SAE := y
 
 	#Flag to enable Fast Path feature
-	ifeq ($(CONFIG_LITHIUM), n)
+	ifneq ($(CONFIG_LITHIUM), y)
 		CONFIG_WLAN_FASTPATH := y
 	endif