std.Target: fix default calling convention for ps3

lib/std/Target.zig

@@ -3752,7 +3752,7 @@ pub fn cCallingConvention(target: *const Target) ?std.builtin.CallingConvention
         .riscv32, .riscv32be => .{ .riscv32_ilp32 = .{} },
         .sparc64 => .{ .sparc64_sysv = .{} },
         .sparc => .{ .sparc_sysv = .{} },
-        .powerpc64 => if (target.abi.isGnu())
+        .powerpc64 => if (target.os.tag == .ps3 or target.abi.isGnu())
             .{ .powerpc64_elf = .{} }
         else
             .{ .powerpc64_elf_v2 = .{} },

src/target.zig

@@ -695,7 +695,8 @@ pub fn llvmMachineAbi(target: *const std.Target) ?[:0]const u8 {
             .gnuabin32, .muslabin32 => "n32",
             else => "n64",
         },
-        .powerpc64, .powerpc64le => if (target.os.tag == .ps3) "elfv1" else "elfv2",
+        .powerpc64 => if (target.os.tag == .ps3) "elfv1" else "elfv2",
+        .powerpc64le => "elfv2",
         .riscv64, .riscv64be => if (target.cpu.has(.riscv, .e))
             "lp64e"
         else if (target.cpu.has(.riscv, .d))