arm64: mm: list kernel sections in order

In the boot log, instead of listing .init first, list .text, .rodata,
.init and .data in the same order they appear in memory

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>