Update spin versioni for rustsbi-qemu

platform/qemu/Cargo.toml

@@ -12,7 +12,7 @@ rustsbi = { path = "../../rustsbi" }
 
 linked_list_allocator = "0.8"
 lazy_static = { version = "1", features = ["spin_no_std"] }
-spin = "0.5"
+spin = "0.6"
 riscv = { git = "https://github.com/rust-embedded/riscv", features = ["inline-asm"] }
 
 # 这几个其实不用，应该使用对应的hal库实现