feat(rdn2): add SPI ID ranges for RD-N2 multichip platform

Add the SPI ID ranges for various chips on RD-N2 multichip platform
(rdn2cfg2). Also fix the max SPI ID for chip#0 that was incorrectly
set.
The SPI ranges for rdn2cfg2 platform are as shown below:
============================================
Chip# |  CHIP_START_INTID  |  CHIP_END_INTID
============================================
0     |     32             |    511
1     |     512            |    991
2     |     4096           |    4575
3     |     4576           |    5055

Signed-off-by: Vivek Gautam <vivek.gautam@arm.com>
Change-Id: I146944af1ffe52c300eef2ef48b1077a9559bf41
1 file changed