loader: Make arm64_image_header public

[AlexOrozco1256]

Summary of the PR

This header is equivalent to the boot_params header found at the top of x86 kernels. We want to make this struct public to use it in a fw_cfg implementation that reads the kernel header for both arm and x86

[likebreath]

The CI is complaining about missing docs for public data structure:

error: missing documentation for a struct
--
  | --> src/loader/pe/mod.rs:78:1
  | \|
  | 78 \| pub struct arm64_image_header {
  | \| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  | \|
  | note: the lint level is defined here
  | --> src/lib.rs:10:9
  | \|
  | 10 \| #![deny(missing_docs)]
  | \|         ^^^^^^^^^^^^

[AlexOrozco1256]

The CI is complaining about missing docs for public data structure:

error: missing documentation for a struct
--
  | --> src/loader/pe/mod.rs:78:1
  | \|
  | 78 \| pub struct arm64_image_header {
  | \| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  | \|
  | note: the lint level is defined here
  | --> src/lib.rs:10:9
  | \|
  | 10 \| #![deny(missing_docs)]
  | \|         ^^^^^^^^^^^^

fixed! thanks for the review!

[roypat]

Will the fields also need to be public, or is the struct + its ByteValued impl enough for what you want to do? And if we're at it, let's also update the riscv struct :)

[AlexOrozco1256]

Will the fields also need to be public, or is the struct + its ByteValued impl enough for what you want to do? And if we're at it, let's also update the riscv struct :)

I need to be able to read text_offset to know where the kernel starts. I made all the fields public to mirror the x86 kernel headers. I also updated the riscv struct, thanks for the review!