ARM: dts: sun7i: add WiFi module to Cubietruck DTS

The CubieTruck has an AMPAK AP6210 WiFi+Bluetooth module. The WiFi
part is a BCM43362 IC connected to MMC2 in the A20 SoC via SDIO.
The IC also takes a 32.768 KHz low power clock input, and a power
enable signal via GPIO.

The WiFi module supports out-of-band interrupt signaling via GPIO,
but this is not supported in this patch.
ARM: dts: sun7i: add bluetooth module to CubieTruck DTS

The CubieTruck has an AMPAK AP6210 WiFi+Bluetooth module. The
Bluetooth part is a BCM20710 IC connected to UART2 in the A20
SoC. The IC also takes a 32.768 KHz low power clock input, a power
enable signal and a wake signal via GPIO.

The Bluetooth module supports out-of-band interrupt signaling via
GPIO, but this is not supported in this patch.
net: rfkill: gpio: add clock-frequency DT property support

Some devices require a specific clock rate for the clock tied to
the rfkill device. Add clock-frequency property so we can specify
this from the DT.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
ARM: dts: sun7i: add requested clock rate to rfkill nodes