meta-romulus: Make avsbus-workaround run after power on

Romulus power on workarounds requires power is on, otherwise the i2c
devices are not accessible.
Changing avsbus-workaround to run after power on achieves the goal, that
all the power on sequence followed by avsbus-workaround are run after
power is on.

Note: During the period between power is on and CPLD trigger, PGOOD is
not asserted, which seems to break the op-power-start and
op-wait-power-on.

Change-Id: I0379b0adee53606f18fe64ce39c0acfe11c51622
Signed-off-by: Lei YU <mine260309@gmail.com>
3 files changed