Do not mention x86 floating point numbers in CFI.

We have explicitly declared them as undefined, but libunwind does
not seem to support them at all.  Omit the initialization to make
libunwind happy.  Reasonable debugger should still default to
undefined since they are not callee save registers.

Bug: 20491296
Change-Id: Ibaa9595b977508e518bfe3f88b240e8959b1198f
2 files changed