perf/x86/intel/uncore: Add iMC freerunning for Panther Lake

JIRA: https://issues.redhat.com/browse/RHEL-47456

upstream
========
commit 829f5a6
Author: Kan Liang <kan.liang@linux.intel.com>
Date: Mon Jul 7 13:17:50 2025 -0700

description
===========
PTL uncore imc freerunning counters are the same as the previous HW.

    Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
    Link: https://lore.kernel.org/r/20250707201750.616527-5-kan.liang@linux.intel.com

Signed-off-by: Michael Petlan <mpetlan@redhat.com>

Author: rfmvh

arch/x86/events/intel/uncore_snb.c

@@ -1905,9 +1905,17 @@ static struct intel_uncore_type *ptl_uncores[UNCORE_PTL_MAX_NUM_UNCORE_TYPES] =
 	[UNCORE_PTL_TYPE_HBO] = &ptl_uncore_hbo,
 };
 
+#define UNCORE_PTL_MMIO_EXTRA_UNCORES		1
+
+static struct intel_uncore_type *ptl_mmio_extra_uncores[UNCORE_PTL_MMIO_EXTRA_UNCORES] = {
+	&adl_uncore_imc_free_running,
+};
+
 void ptl_uncore_mmio_init(void)
 {
-	uncore_mmio_uncores = uncore_get_uncores(UNCORE_ACCESS_MMIO, 0, NULL,
+	uncore_mmio_uncores = uncore_get_uncores(UNCORE_ACCESS_MMIO,
+						 UNCORE_PTL_MMIO_EXTRA_UNCORES,
+						 ptl_mmio_extra_uncores,
 						 UNCORE_PTL_MAX_NUM_UNCORE_TYPES,
 						 ptl_uncores);
 }