m68k: coldfire: select legacy gpiolib interface for mcfqspi

m68k: coldfire: select legacy gpiolib interface for mcfqspi

The common coldfire code uses the old GPIO number based interfaces for
at least the QSPI chipselect lines. Select the required Kconfig symbol
to keep it building when that becomes optional.

Apparently there are no devices attached to a QSPI controller in any of
the coldfire boards, so this is not actually used in upstream kernels.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>