[intrinsics] Emit mem and FCsr full support

This also enables the FCsr tests now that the intrinsics are turned on.

Bug: 291126259
Test: mm and berberis_host_tests
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:728d170ac92a1dd3a5b14e249e191b75e8add1f9)

Merged-In: I194d5897e4ef57f655d2957a6b01974837eb277c
Change-Id: I194d5897e4ef57f655d2957a6b01974837eb277c
7 files changed