arm: Don't use pseudo instructions to implement regular instructions.

arm: Don't use pseudo instructions to implement regular instructions.

Some ARM instructions were using quiesce and quiesceSkip pseudo
instruction bodies instead of implementing the one line of each of those
functions themselves. This creates two problems. First, it adds an
artificial depedence on the pseudo instruction implementations. Second,
it would confusing cause pseudo instruction DPRINTFs to fire when normal
instructions were executing.

This change simply replaces the calls with their targets one line
implementation, with some very minor duplication from multiple call
sights factored out into a local variable.

Change-Id: I596eafd8714227fa7f69edd542108598c9809b11
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/27790
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>