thermal: intel: int340x: processor: Add MMIO RAPL PL4 support

Similar to the MSR RAPL interface, MMIO RAPL supports PL4 too, so add
MMIO RAPL PL4d support to the processor_thermal driver.

As a result, the powercap sysfs for MMIO RAPL will show a new "peak
power" constraint.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20240930081801.28502-7-rui.zhang@intel.com
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: zhang-rui

drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c

@@ -13,9 +13,9 @@ static struct rapl_if_priv rapl_mmio_priv;
 
 static const struct rapl_mmio_regs rapl_mmio_default = {
 	.reg_unit = 0x5938,
-	.regs[RAPL_DOMAIN_PACKAGE] = { 0x59a0, 0x593c, 0x58f0, 0, 0x5930},
+	.regs[RAPL_DOMAIN_PACKAGE] = { 0x59a0, 0x593c, 0x58f0, 0, 0x5930, 0x59b0},
 	.regs[RAPL_DOMAIN_DRAM] = { 0x58e0, 0x58e8, 0x58ec, 0, 0},
-	.limits[RAPL_DOMAIN_PACKAGE] = BIT(POWER_LIMIT2),
+	.limits[RAPL_DOMAIN_PACKAGE] = BIT(POWER_LIMIT2) | BIT(POWER_LIMIT4),
 	.limits[RAPL_DOMAIN_DRAM] = BIT(POWER_LIMIT2),
 };