std.zig.target: Split mips(el)-linux-musl triples into mips(el)-linux-musleabi(hf).

Closes ziglang#21184.

Author: alexrp

lib/std/zig/target.zig

@@ -50,10 +50,12 @@ pub const available_libcs = [_]ArchOsAbi{
     .{ .arch = .mips64, .os = .linux, .abi = .musl },
     .{ .arch = .mipsel, .os = .linux, .abi = .gnueabi },
     .{ .arch = .mipsel, .os = .linux, .abi = .gnueabihf },
-    .{ .arch = .mipsel, .os = .linux, .abi = .musl },
+    .{ .arch = .mipsel, .os = .linux, .abi = .musleabi },
+    .{ .arch = .mipsel, .os = .linux, .abi = .musleabihf },
     .{ .arch = .mips, .os = .linux, .abi = .gnueabi },
     .{ .arch = .mips, .os = .linux, .abi = .gnueabihf },
-    .{ .arch = .mips, .os = .linux, .abi = .musl },
+    .{ .arch = .mips, .os = .linux, .abi = .musleabi },
+    .{ .arch = .mips, .os = .linux, .abi = .musleabihf },
     .{ .arch = .powerpc64le, .os = .linux, .abi = .gnu, .glibc_min = .{ .major = 2, .minor = 19, .patch = 0 } },
     .{ .arch = .powerpc64le, .os = .linux, .abi = .musl },
     .{ .arch = .powerpc64, .os = .linux, .abi = .gnu },

test/tests.zig

@@ -323,7 +323,7 @@ const test_targets = blk: {
             .target = .{
                 .cpu_arch = .mips,
                 .os_tag = .linux,
-                .abi = .musl,
+                .abi = .musleabihf,
             },
             .link_libc = true,
             .slow_backend = true,
@@ -350,7 +350,7 @@ const test_targets = blk: {
             .target = .{
                 .cpu_arch = .mipsel,
                 .os_tag = .linux,
-                .abi = .musl,
+                .abi = .musleabihf,
             },
             .link_libc = true,
             .slow_backend = true,
@@ -637,7 +637,7 @@ const c_abi_targets = [_]CAbiTarget{
         .target = .{
             .cpu_arch = .mips,
             .os_tag = .linux,
-            .abi = .musl,
+            .abi = .musleabihf,
         },
     },
     .{