Can contains 2 fifos. Both generates its own interrupt.
IRQ_RX occurs when a message has arrived in FIFO-0 , FIFO-0 is full or
overrun.
IRQ_RX1 occurs when a message has arrived in FIFO-1 , FIFO-1 is full or
overrun.
Implement all CAN modes except for GlobalTest on on the LPC11CXX
and LPC15XX targets which use the C_CAN controller
Fix swapped ordering between MODE_TEST_LOCAL and MODE_TEST_GLOBAL
in the HAL definition of CanMode.