BACKPORT: arm64: kernel: Convert to modern annotations for assembly data

This backport excludes the changes to entry.S due to unresolvable merge
conflicts. They are not needed as no symbols there are exported. The
changes to head.S merged cleanly.

In an effort to clarify and simplify the annotation of assembly functions
in the kernel new macros have been introduced. These include specific
annotations for the start and end of data, update symbols for data to use
these.

Bug: 352610488
Change-Id: I53ed408ccd7bc96af9221a9ba7ed4450ffcd6299
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit a5d4420b26b5068a98ce75210b07d2e083f5f691)
Signed-off-by: Giuliano Procida <gprocida@google.com>