arch-sparc: Replace M5_HWCAP_SPARC_* constants.
arch-sparc: Replace M5_HWCAP_SPARC_* constants.

These were not using correct style and were using an obsolete M5 prefix.

Change-Id: I24273857bee2fcf52f203262b431c23665d5e87f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45244
Maintainer: Gabe Black <d3e8afea784ab4a50a2dbf9149d2eaa8478e1cbc@gmail.com>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Daniel Carvalho <91779fc734d358d9575ec4910de29bfcbcaf1b22@yahoo.com.br>

gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5