ath9k: add some more pending fixes / optimizations

package/kernel/mac80211/patches/300-pending_work.patch

...ernel/mac80211/patches/410-ath9k_allow_adhoc_and_ap.patch

.../kernel/mac80211/patches/501-ath9k-eeprom_endianess.patch

package/kernel/mac80211/patches/502-ath9k_ahb_init.patch

package/kernel/mac80211/patches/521-ath9k_cur_txpower.patch

...80211/patches/524-ath9k_use_configured_antenna_gain.patch

package/kernel/mac80211/patches/530-ath9k_extra_leds.patch

package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch

.../543-ath9k-allow-to-disable-bands-via-platform-data.patch