[orc-rt] Fix swift protocol metadata registration

The __swif5_proto and __swift5_protos sections had their meaning
inverted. Fix, and rename the arrays so it is more obvious which is
which.

Differential Revision: https://reviews.llvm.org/D131206

GitOrigin-RevId: adea1fa047af3528e5a640acb7a80afdcca726d1
1 file changed