Non-TI chips (including socfpga) needs different raminit sequence. Implement
it.
Tested-by: NThor Thayer <tthayer@altera.com>
Signed-off-by: NThor Thayer <tthayer@altera.com>
Signed-off-by: NPavel Machek <pavel@denx.de>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>