LED0 is the "RF Active"/Yellow LED on the sysmobts-v2. We are not
using the 'yellow' LED alias as one needs to provide two functions
that call __led_set on led_yellow_on and led_yellow_off. Initialize
the GPIO direction in the board routine as the status_led code will
not be used.
The only ARM/kernel visible change is the change of the EEPROM. U-Boot
sadly does not support to select EEPROM with different page sizes and
address length. This is why we need to patch the common epprom code.
Introduce a new command to allow dynamic configuration of the EEPROM,
move the eeprom parameters into variables and change the code. This sadly
copies the SPI_X code as well. The address creation could be moved to
a different variable.
This code has been tested on RevC and RevD hardware and an IP address
could be obtained in both cases.