spi: bcm2835: driver for "auxiliar" spi1/spi2

[Martin Sperl]

Quick question: for the auxiliar spi1 and spi2 of the BCM2835 chipset
should I create a separate driver - say spi-bcm2835aux.c - or incorporate
it into the exising spi-bcm2835.c driver.

Note that the register set for the auxiliar spi devices is totally different
so any code-overlap with the existing spi-bcm2835.c would be minimal.

Any preferences?