target/arm: Update contiguous first-fault and no-fault loads

target/arm: Update contiguous first-fault and no-fault loads

With sve_cont_ldst_pages, the differences between first-fault and no-fault
are minimal, so unify the routines.  With cpu_probe_watchpoint, we are able
to make progress through pages with TLB_WATCHPOINT set when the watchpoint
does not actually fire.

Reviewed-by: Peter Maydell <[email protected]>
Signed-off-by: Richard Henderson <[email protected]>
Message-id: 20200508154359[email protected]
Signed-off-by: Peter Maydell <[email protected]>