defconfig: am437x_sk_evm: enable spi driver model
enable spi driver model for am437x_sk_evm as ti_qspi supports
driver model
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Mugunthan V N