Fix x86_64 dependency of common crate

Author: phil-opp

Cargo.lock

@@ -14,7 +14,7 @@ log = "0.4.14"
 spinning_top = "0.2.4"
 uefi = "0.13"
 usize_conversions = "0.2.0"
-x86_64 = { version = "0.14.8", default-features = false }
+x86_64 = { version = "0.14.8" }
 xmas-elf = "0.8.0"
 
 [dependencies.font8x8]