arm: socfpga: nic301: Add NIC-301 GPV register file

arm: socfpga: nic301: Add NIC-301 GPV register file

Add register definition for the NIC-301 used on SoCFPGA.

Signed-off-by: Marek Vasut <[email protected]>
Cc: Chin Liang See <[email protected]>
Cc: Dinh Nguyen <[email protected]>
Cc: Albert Aribaud <[email protected]>
Cc: Tom Rini <[email protected]>
Cc: Wolfgang Denk <[email protected]>
Cc: Pavel Machek <[email protected]>
Acked-by: Pavel Machek <[email protected]>