Add Arch::operator| and operator|=

The OR operator for Arch stacks bitness information.

Test: libvintf_test
Test: lshal --init-vintf

Bug: 62675393
Change-Id: I3fc56b3a39e48c8a2d452f2796123fca3fc1d4a4
Merged-In: I3fc56b3a39e48c8a2d452f2796123fca3fc1d4a4
2 files changed