arch: riscv: linker: do not require jedec,spi-nor to be 'okay'
arch: riscv: linker: do not require jedec,spi-nor to be 'okay'

It is not always possible to enable the jedec,spi-nor driver (e.g.
because the SPI controller can't be enabled). This is the case for
HiFive boards. Still, DT can be used for hardware description.

Signed-off-by: Gerard Marull-Paretas <bedb45f43a286e49f4dcda039a436b216ae61ef3@nordicsemi.no>

finikorg/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr