This patch is part of a larger initiative aimed at fixing floating-point `max` and `min` operations in MLIR: https://discourse.llvm.org/t/rfc-fix-floating-point-max-and-min-operations-in-mlir/72671. This commit renames `maxf` and `minf` enumerators of `AtomicRMWKind` to better reflect the current naming scheme and the goals of the RFC.