omap4: tuna: Modem IF: SPI driver for LTE boot

These are special functions to send the LTE(CMC221) bootloader and
usbloader to the LTE Modem
- LTE Modem(CMC221) has no flash Memory, so bootloader must be loaded
from AP
- At runtime AP-LTE inteface is USB, but there is no USB driver at LTE
Modem romboot, so we have to use SPI interface to load the LTE Modem
bootloader and usbloader.
- Because these are special functions and the only usage is to send
bootloader/usbloader,these functions does not comply with normal
MODEM_IF.

Signed-off-by: dongjinseo <dejay.seo@samsung.com>
omap4: tuna: update ram console registration

Updating new ram console registration interface used for omap4 in new
kernel.

Signed-off-by: Israel Cepeda <israel4c@gmail.com>