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

Since commits

    653ee35c ("can: hi311x: remove custom DMA mapped buffer")
    Fixes: df58525d ("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.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/spi/Kconfig

@@ -4,13 +4,11 @@ menu "CAN SPI interfaces"
 
 config CAN_HI311X
 	tristate "Holt HI311x SPI CAN controllers"
-	depends on CAN_DEV && SPI && HAS_DMA
 	help
 	  Driver for the Holt HI311x SPI CAN controllers.
 
 config CAN_MCP251X
 	tristate "Microchip MCP251x and MCP25625 SPI CAN controllers"
-	depends on HAS_DMA
 	help
 	  Driver for the Microchip MCP251x and MCP25625 SPI CAN
 	  controllers.