arm/efi: Add missing init_array to linker script.

* Nice catch mmu_man!
* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46770

Change-Id: I8512b32687a292427295bbaa3ebf60396eac300f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3105
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

system/boot: Fix relocations in ARM EFI loader

The .rel.* sections were forgotten in the PE binary, so we just put them in a single .rel

Change-Id: I7bc564e18ec8dd64410b43106272ee74696c2883
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2973
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>

system/boot: Unify spin design, add missing symbols to asm/ld

Change-Id: I1dd98a2243d498ec1c827f7a60385237d12a0d39
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2283
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

system/boot: More cleanup and shuffling

* arm efi additions
* cleanup some cpu headers which were oddly
split between efi and bios_ia32
* Move calculate_cpu_conversion_factor over to
arch_timer since it is timerish, and x86 only
* Drop some duplicated code from efi start. Move
hpet init code into efi timer/hpet code

Change-Id: Ia4264a5690ba8c09417b06788febc4f572f111ce
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2259
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>