boards: shields: Enable gpio by default on adafruit_2_8_tft_touch_v2

The display controller and SDMMC slot both define GPIOs for their chip
select signals, so enable GPIO drivers by default for this shield.

This missing default was discovered in CI when extending the fat_fs
sample to build with this shield. Many boards enable GPIO drivers by
default, but some boards like sam_v71_xult and sam_v71b_xult do not.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
1 file changed