boards: beagle_bcf: Fix undefined references to pinctrl and gpio device

This patch fixes undefined references when compiling tests/drivers/flash
for beagleconnect_freedom board using following command:

west build -b beagleconnect_freedom tests/drivers/flash

Adding CONFIG_PINCTRL fixes undefined references to
'pinctrl_lookup_state' and 'pinctrl_configure_pins'.

Adding CONFIG_GPIO fixes undefined reference to '__device_dts_ord_13'
from spi_nor and spi_cc13xx_cc26xx drivers.

Fixes #56181

Signed-off-by: Patryk Duda <pdk@semihalf.com>