Enable experimental rust support for ppc64le and ppc32be. The patch for
ppc32 has been provided by Link Mauve[1] and ppc64le support[2] has been 
merged over it. ppc32 needs some toolchain fixes mentioned in the patch 
`rust: Add PowerPC support` and the discussion for that is done here[1]. 

This has been tested on powernv9 hardware and power10 pseries qemu. I
I request Link to test the ppc32 part as i don't have a hardware to test
it out. 

[1] https://lore.kernel.org/all/20260204030507.8203-1-linkmauve@linkmauve.fr
[2] https://lore.kernel.org/all/20260204042417.83903-1-mkchauras@gmail.com

Changelog:
V1 -> V2:
- jump label fix for rust has been moved to a separate patch
- PPC32 support has been taken
- rust support has been marked experimental
- target.json dependency has been removed
- HAVE_RUST now depends on CPU_LITTLE_ENDIAN for PPC64

Link Mauve (1):
  rust: Add PowerPC support

Mukesh Kumar Chaurasiya (IBM) (2):
  powerpc/jump_label: adjust inline asm to be consistent
  powerpc: Enable Rust for ppc64le

 Documentation/rust/arch-support.rst   |  1 +
 arch/powerpc/Kconfig                  |  1 +
 arch/powerpc/Makefile                 |  9 +++++++++
 arch/powerpc/include/asm/jump_label.h | 23 +++++++++++++----------
 rust/Makefile                         | 11 ++++++++++-
 5 files changed, 34 insertions(+), 11 deletions(-)

-- 
2.52.0