ipq806x: fix leds, sata port for Netgear R7800 and minor fixes - renamed leds in...

ipq806x: fix leds, sata port for Netgear R7800 and minor fixes - renamed leds in correct color accordance - blink power led with white during boot and with amber when flashing firmware - fixed usb leds - enabled unused wps and rfkill leds as wlan leds. Now rfkill led is for 2.4GHz and wps - 5GHz WIFI - removed unneeded bootargs - removed unneeded pci pins from R7800 DT (driver already handles it in proper way) and add tx offsetting - nand ecc step size - fixed sata ports

Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>