With the backport of the kernel 4.5 pinctrl-xway patches (3551609d &
826bca29) the pinmux group "spi" was splitted into "spi_di", "spi_do" &
"spi_clk". But the no longer existing group "spi" is still used by some
device tree source files.
This fixes the detection of the wireless chipset of the VGV7510KW22.
Signed-off-by: Mathias Kresin <openwrt@kresin.me>
SVN-Revision: 48658
