cpu: Fix bug introduced by RequestPtr type change

Missing buffer allocation in mwaitAtomic.

Change-Id: Ifccb6df2427df8b0daac5ee6a99e5cca0b20825e
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/11469
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
1 file changed