Switch to extension board detection using pci_find_device()
instead of detecting by i2c access to EEPROM device on
extension board.
This is a cleaner detection method since EEPROM addresses
can be different on different board revisions. This also
avoids "i2c_read: failed to address chip" error messages
in the boot log on boards without extension board which
may confuse users.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
On newer rev5 hardware the extension board EEPROM I2C address
has been changed to 0x54. Make this I2C address configurable
depending on CONFIG_DIGSY_REV5 so that extention board presence
detection works correctly on newer hardware.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Anatolij Gustschin