MLK-18318: mx7ulp: Enable QSPI interrupt as a wakeup source on MX7ULP

MLK-18318: mx7ulp: Enable QSPI interrupt as a wakeup source on MX7ULP

MX7ULP needs to have the QSPI interrupt configured as a wakeup source
in the SIM_WKPU_WAKEUP_ENABLE register, otherwise the QSPI interrupts
do not wakeup the CPU from idle mode leading to poor performance in
Linux.

The SIM_WKPU_WAKEUP_ENABLE register only exists in B0 silicon, so
make sure to only write to this register in the B0 version (or greater).

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
(cherry picked from commit 1ab33446d6843f560fb6d14c781f6417225f8f3d)
(cherry picked from commit 8116f34387f8164dd72656fb8278e6df9fdf4c05)