Pass the cmdline aapcs bitfield options to cc1

Pass the cmdline aapcs bitfield options to cc1

The following commits added commandline arguments to control following the Arm
Procedure Call Standard for certain volatile bitfield operations:
- https://reviews.llvm.org/D67399
- https://reviews.llvm.org/D72932

This commit fixes the oversight that these args weren't passed from the driver
to cc1 if appropriate.

Where *appropriate* means:
- `-faapcs-bitfield-width`: is the default, so won't be passed
- `-fno-aapcs-bitfield-width`: should be passed
- `-faapcs-bitfield-load`: should be passed

Differential Revision: https://reviews.llvm.org/D96784