guest_loader: Use WrapGuestFunction

Previously only available through function_wrappers.h, which has guest
arch-specific dependencies. Now that we've moved WrapGuestFunction into
a general arch-agnostic header guest_function_wrapper.h, we can use it
in common guest_loader code.

Bug: 279068747
Test: m libberberis_guest_loader_riscv64
Change-Id: I90cce94ef81c1a39e74099757d0db7bd1af90fb5
1 file changed