perf/arm-cmn: Add CMN-650 support

Add the identifiers and events for CMN-650, which slots into its
evolutionary position between CMN-600 and the 700-series products.
Imagine CMN-600 made bigger, and with most of the rough edges smoothed
off, but that then balanced out by some bonkers PMU functionality for
the new HN-P enhancement in CMN-650r2.

Most of the CXG events are actually common to newer revisions of CMN-600
too, so they're arguably a little late; oh well.

Signed-off-by: Robin Murphy <[email protected]>
Tested-by: Ilkka Koskinen <[email protected]>
Link: https://lore.kernel.org/r/b0adc5824db53f71a2b561c293e2120390106536.1650320598.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <[email protected]>

Author: rmurphy-arm