This commit adds support for the SPI which
can be found in Apollo3 SoCs, it can work in
both DMA and non-DMA modes
Signed-off-by: Hao Luo <hluo@ambiq.com>
Some Ambiq Apollox Blue SOC (e.g. Apollo3 Blue) uses internal designed
BLEIF module which is different from the general IOM module for SPI
transceiver. The called HAL API will also be independent. This driver is
implemented for the BLEIF module usage scenarios.
Signed-off-by: Aaron Ye <aye@ambiq.com>
