When booting on a machine that uses the compat pmu driver we see this:
 [    0.071192] GENERIC_COMPAT performance monitor hardware support registered
Which is a bit shouty. Give it a nicer name.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220610044006.2095806-1-joel@jms.id.au
 }
 
 static struct power_pmu generic_compat_pmu = {
-       .name                   = "GENERIC_COMPAT",
+       .name                   = "ISAv3",
        .n_counter              = MAX_PMU_COUNTERS,
        .add_fields             = ISA207_ADD_FIELDS,
        .test_adder             = ISA207_TEST_ADDER,