ARM: i.MX efika-sb: switch otg port to utmi mode

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ifup: Add comment why xxx-discover files have to be skipped

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
kernel-install: fix return value check for getline

getline returns the number of characters read, so check for
ret < 0 instead of ret.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>