mac80211: Update to backports-5.10.42

The removed patches were integrated upstream.

The brcmf_driver_work workqueue was removed in brcmfmac with kernel
5.10.42, the asynchronous call was covered to a synchronous call. There
is no need to wait any more.
This part was removed manually from this patch:
brcm/860-brcmfmac-register-wiphy-s-during-module_init.patch

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 04a260911c)

package/kernel/mac80211/patches/brcm/860-brcmfmac-register-wiphy-s-during-module_init.patch

@@ -11,16 +11,6 @@ module loads successfully.
 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
 ---
 
---- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
-+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
-@@ -1557,6 +1557,7 @@ int __init brcmf_core_init(void)
- {
- 	if (!schedule_work(&brcmf_driver_work))
- 		return -EBUSY;
-+	flush_work(&brcmf_driver_work);
- 
- 	return 0;
- }
 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
 @@ -431,6 +431,7 @@ struct brcmf_fw {