AMPAK AP6255

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 * AMPAK AP6255 - SDIO 3.0 • Broadcom BCM43455
 * • 2.4/5GHz WiFi/BT 4.2 • 1T1R 802.11abgn/ac
 * • SDIO 3.0 WiFi, UART/PCM BT 4.2; 2.4/5GHz;


 * Khadas Vim on CNX|Software
 * Broadcom BCM43455 1T1R (802.11abgn/ac)
 * Khadas Vim (14e4:43ab/02d0:a9bf)


 * AUN D7 and AMPAK AP6255 (bcm43455c0) disconnects fix on Wi-Cat (RU)