std: add basic target information for m88k-openbsd

closes https://codeberg.org/ziglang/zig/issues/31816

src/codegen/llvm.zig

@@ -112,6 +112,7 @@ pub fn targetTriple(allocator: Allocator, target: *const std.Target) ![]const u8
         .hppa64,
         .kalimba,
         .kvx,
+        .m88k,
         .microblaze,
         .microblazeel,
         .or1k,
@@ -478,6 +479,7 @@ pub fn dataLayout(target: *const std.Target) []const u8 {
         .hppa64,
         .kalimba,
         .kvx,
+        .m88k,
         .microblaze,
         .microblazeel,
         .or1k,
@@ -4531,6 +4533,7 @@ pub fn toLlvmCallConvTag(cc_tag: std.lang.CallingConvention.Tag, target: *const
         .loongarch32_ilp32,
         .m68k_sysv,
         .m68k_gnu,
+        .m88k_sysv,
         .msp430_eabi,
         .or1k_sysv,
         .propeller_sysv,
@@ -4903,6 +4906,7 @@ pub fn initializeLLVMTarget(arch: std.Target.Cpu.Arch) void {
         .hppa64,
         .kalimba,
         .kvx,
+        .m88k,
         .microblaze,
         .microblazeel,
         .or1k,