There's a closed pull request on the void-packages repository

pinebookpro-kernel: fix build w/ gcc10
https://github.com/void-linux/void-packages/pull/24699

Description:
With gcc10 the patched piece of code does not compile when the XORs (^)
are done inside the initializer, so I added local variables for the
four initializers besides kiv.

The changes of `const uint8_t ...` to `uint8_t const ...` is just to match the [official docs for vld1q_u8()](https://developer.arm.com/architectures/instruction-sets/simd-isas/neon/intrinsics?search=vld1q_u8)

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