can: spi: Kconfig: remove unneeded dependencies form Kconfig symbols

can: spi: Kconfig: remove unneeded dependencies form Kconfig symbols

Since commits

    6491429d23f6 ("can: hi311x: remove custom DMA mapped buffer")
    Fixes: da671f71677b ("can: mcp251x: remove custom DMA mapped buffer")
both the hi3111x and the mcp251x driver don't make use of the DMA API
any more. So we can safely remove the HAS_DMA dependency.

While we're here, remove the unneeded CAN_DEV and SPI dependencies from
the CAN_HI311X symbol, as the parent menus already have these
dependencies.

Link: https://lore.kernel.org/r/20200915223527.1417033-24-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>