Update hex formatting to match objdump

src/acpi/aml/namespace.rs

src/acpi/aml/type2opcode.rs

src/acpi/dmar/mod.rs

src/acpi/fadt.rs

src/acpi/hpet.rs

src/acpi/madt.rs

src/acpi/mod.rs

src/arch/x86_64/interrupt/exception.rs

src/arch/x86_64/interrupt/trace.rs

src/arch/x86_64/macros.rs

src/arch/x86_64/paging/mapper.rs

src/arch/x86_64/start.rs

src/arch/x86_64/stop.rs

src/context/signal.rs

src/scheme/sys/iostat.rs

src/syscall/debug.rs

src/syscall/mod.rs

src/syscall/process.rs

src/syscall/validate.rs