update uart_16550 to ver. 0.2.15 for rustc nightly
@@ -19,7 +19,7 @@ lazy_static = { version = "1.4", features = ["spin_no_std" ] }
[target.'cfg(target_arch = "x86_64")'.dependencies]
x86_64 = "0.14"
-uart_16550 = "=0.2.12"
+uart_16550 = "=0.2.15"
raw-cpuid = "9.0"
pc-keyboard = "0.5"
apic = { git = "https://github.com/rcore-os/apic-rs", rev = "fb86bd7" }
