Revert "kasan: Disable Software Tag-Based KASAN with GCC"

Revert "kasan: Disable Software Tag-Based KASAN with GCC"

This reverts commit 7aed6a2c51ffc97a126e0ea0c270fab7af97ae18.

Now that __no_sanitize_address attribute is fixed for KASAN_SW_TAGS with
GCC, allow re-enabling KASAN_SW_TAGS with GCC.

Cc: Andrey Konovalov <[email protected]>
Cc: Andrew Pinski <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Marco Elver <[email protected]>
Reviewed-by: Andrey Konovalov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>