perf/x86/intel/uncore: Support customized MMIO map size

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

JIRA: https://issues.redhat.com/browse/RHEL-47442

upstream
========
commit fca24bf
Author: Kan Liang <kan.liang@linux.intel.com>
Date: Mon Jul 7 13:17:48 2025 -0700

description
===========
For a server platform, the MMIO map size is always 0x4000. However, a
client platform may have a smaller map size.

Make the map size customizable.

    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/20250707201750.616527-3-kan.liang@linux.intel.com

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

Author: rfmvh

arch/x86/events/intel/uncore_discovery.c

@@ -650,7 +650,7 @@ void intel_generic_uncore_mmio_init_box(struct intel_uncore_box *box)
 	}
 
 	addr = unit->addr;
-	box->io_addr = ioremap(addr, UNCORE_GENERIC_MMIO_SIZE);
+	box->io_addr = ioremap(addr, type->mmio_map_size);
 	if (!box->io_addr) {
 		pr_warn("Uncore type %d box %d: ioremap error for 0x%llx.\n",
 			type->type_id, unit->id, (unsigned long long)addr);

arch/x86/events/intel/uncore_snbep.c

@@ -6495,6 +6495,8 @@ static void uncore_type_customized_copy(struct intel_uncore_type *to_type,
 		to_type->get_topology = from_type->get_topology;
 	if (from_type->cleanup_mapping)
 		to_type->cleanup_mapping = from_type->cleanup_mapping;
+	if (from_type->mmio_map_size)
+		to_type->mmio_map_size = from_type->mmio_map_size;
 }
 
 static struct intel_uncore_type **