All 6 replace_lane operations for ARM and ARM64.

Changes to wasm-compiler required for ARM (where register aliasing is
different - 2 fp registers map to 1 simd register). When src2_rc is
kFpReg, and src1_rc is kFpRegPair, we still need to pin src2 when
getting a register for src1, since the registers can overlap. (On other
backends, src1_rc == src2_rc == kFpReg, so the current condition is met,
and we correctly pin src2). Same for result_rc and src2_rc.

Bug: v8:9909
Change-Id: Ib39b71534290a7109fb0da4bf62dabc66460a0dd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2117637
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66893}