mem: spi-mem: add declaration for spi_mem_default_supports_op

spi_mem_default_supports_op is used internally by controller
drivers to verify operation semantics are correct.

It is used internally inside spi-mem but has not (in U-Boot)
been declared in spi-mem.h for external use.

Signed-off-by: Mathew McBride <matt@traverse.com.au>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
1 file changed