std.debug.SelfInfo.Elf: enable unwinding for sparc*-linux

Author: alexrp

lib/std/debug/SelfInfo/Elf.zig

@@ -102,7 +102,7 @@ pub const can_unwind: bool = s: {
             .x86,
             .x86_64,
         },
-        // Not supported yet: arc, arm/armeb/thumb/thumbeb, csky, m68k, or1k, sparc/sparc64, xtensa
+        // Not supported yet: arc, arm/armeb/thumb/thumbeb, csky, m68k, or1k, xtensa
         .linux => &.{
             .aarch64,
             .aarch64_be,
@@ -119,6 +119,8 @@ pub const can_unwind: bool = s: {
             .riscv32,
             .riscv64,
             .s390x,
+            .sparc,
+            .sparc64,
             .x86,
             .x86_64,
         },