PPC: [cleanup] Replace all remaining Min/Max uses with std::min/max

Port 3836aeb0

Original Commit Message:

    Apart from removing Min and Max (utils.h), this is mostly a renaming.

    In a few cases I had to add a cast. In a bunch of cases I had to use
    initializer lists to force call-by-value for static member constants
    because call-by-reference wouldn't compile (like in the previous CL).
    In a few places I used initializer lists in place of nested min/max
    operations.

R=neis@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: Iecb43c19b8e16721e942553d7d811daf74bedc02
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557570
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71396}

test/cctest/test-constantpool.cc

@@ -104,7 +104,7 @@ TEST(ConstantPoolMixedReach) {
   const int ptrReach = 1 << ptrReachBits;
   const int dblReachBits = kReachBits;
   const int dblReach = kReach;
-  const int dblRegularCount = Min(
+  const int dblRegularCount = std::min(
       dblReach / kDoubleSize, ptrReach / (kDoubleSize + kSystemPointerSize));
   const int ptrRegularCount =
       ((ptrReach - (dblRegularCount * (kDoubleSize + kSystemPointerSize))) /