linux-wandboard

can: at91_can: directly define AT91_MB_RX_LAST

...instead of deriving it from AT91_MB_RX_FIRST and AT91_MB_RX_NUM.
This removes a level of computation, when switching the driver from
compile time constants to runtime values.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>