ath9k: merge initval and tx gain table updates, calibration fixes

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/530-ath9k_extra_leds.patch

...rnel/mac80211/patches/531-ath9k_extra_platform_leds.patch

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

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

.../kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch

...et/linux/ar71xx/files/arch/mips/ath79/mach-wzr-hp-g450h.c

target/linux/generic/files/include/linux/ath9k_platform.h