UPSTREAM: arm64: perf: Simplify registration boilerplate

With the trend for per-core events moving to userspace JSON, registering
names for PMUv3 implementations is increasingly a pure boilerplate
exercise. Let's wrap things a step further so we can generate the basic
PMUv3 init function with a macro invocation, and reduce further new
addition to just 2 lines each.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/b79477ea3b97f685d00511d4ecd2f686184dca34.1639490264.git.robin.murphy@arm.com


Signed-off-by: Will Deacon <will@kernel.org>
(cherry picked from commit 6ac9f30b)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 238597093
Change-Id: I635d3978555c84b4234b6a791c8012ad4f5170c4