dma: stm32f4x: Pull in sub-channel information from Kconfig

The STM32 DMA controller supplies streams, which in turn provide a
selection of channels.  The stream number is provided by the DMA API
through it's 'channel' argument, but the sub-channel (within the
stream) is specified on an application case by case bases via Kconfig.

Change-Id: Ib5bfdb80f4d616516850787e1402164807771c5e
Signed-off-by: Lee Jones <lee.jones@linaro.org>
1 file changed