perf/x86/intel/uncore: Add Sapphire Rapids server MDF support

The MDF subsystem is a new IP built to support the new Intel Xeon
architecture that bridges multiple dies with a embedded bridge system.

The layout of the control registers for a MDF uncore unit is similar to
a IRP uncore unit.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Link: https://lore.kernel.org/r/1625087320-194204-12-git-send-email-kan.liang@linux.intel.com

arch/x86/events/intel/uncore_snbep.c

@@ -5708,6 +5708,11 @@ static struct intel_uncore_type spr_uncore_m3upi = {
 	.name			= "m3upi",
 };
 
+static struct intel_uncore_type spr_uncore_mdf = {
+	SPR_UNCORE_COMMON_FORMAT(),
+	.name			= "mdf",
+};
+
 #define UNCORE_SPR_NUM_UNCORE_TYPES		12
 
 static struct intel_uncore_type *spr_uncores[UNCORE_SPR_NUM_UNCORE_TYPES] = {
@@ -5722,7 +5727,7 @@ static struct intel_uncore_type *spr_uncores[UNCORE_SPR_NUM_UNCORE_TYPES] = {
 	&spr_uncore_upi,
 	&spr_uncore_m3upi,
 	NULL,
-	NULL,
+	&spr_uncore_mdf,
 };
 
 static void uncore_type_customized_copy(struct intel_uncore_type *to_type,