brcmfmac: Check if firmware supports p2p

Add a feature flag to reflect the firmware's p2p capability.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NArend Van Spriel <arend@broadcom.com>
Signed-off-by: NPontus Fuchs <pontusf@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/brcm80211/brcmfmac/feature.c

@@ -129,6 +129,7 @@ void brcmf_feat_attach(struct brcmf_pub *drvr)
 		brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
 	if (drvr->bus_if->chip != BRCM_CC_43362_CHIP_ID)
 		brcmf_feat_iovar_int_set(ifp, BRCMF_FEAT_MBSS, "mbss", 0);
+	brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_P2P, "p2p");
 
 	/* set chip related quirks */
 	switch (drvr->bus_if->chip) {

drivers/net/wireless/brcm80211/brcmfmac/feature.h

@@ -23,12 +23,14 @@
  * MCHAN: multi-channel for concurrent P2P.
  * PNO: preferred network offload.
  * WOWL: Wake-On-WLAN.
+ * P2P: peer-to-peer
  */
 #define BRCMF_FEAT_LIST \
 	BRCMF_FEAT_DEF(MBSS) \
 	BRCMF_FEAT_DEF(MCHAN) \
 	BRCMF_FEAT_DEF(PNO) \
-	BRCMF_FEAT_DEF(WOWL)
+	BRCMF_FEAT_DEF(WOWL) \
+	BRCMF_FEAT_DEF(P2P)
 /*
  * Quirks:
  *