spi25: Drop stale `bus == SPI` guards

These guards were necessary workarounds because we used to call
the functions from core flashprog code. Now that the related code
is contained in the chip driver, we can drop them.

Change-Id: Ib06044a716e2d1c295d902877d0342deb2d78908
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.sourcearcade.org/c/flashprog/+/72518
1 file changed