soc/intel/tigerlake: Add PMC to platform ACPI name entry

PMC device name string "PMC" is added to platform soc_acpi_name()
for pmc driver.

BUG=b:151646486
TEST=Built and booted to kernel successfully.

Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: Ida7fc7e2340f2a809464ca66fd1922f3229e2e18
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41064
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/soc/intel/tigerlake/chip.c b/src/soc/intel/tigerlake/chip.c
index 073c8d2..b806dbb 100644
--- a/src/soc/intel/tigerlake/chip.c
+++ b/src/soc/intel/tigerlake/chip.c
@@ -80,6 +80,7 @@
 	case PCH_DEVFN_PCIE10:	return "RP10";
 	case PCH_DEVFN_PCIE11:	return "RP11";
 	case PCH_DEVFN_PCIE12:	return "RP12";
+	case PCH_DEVFN_PMC:	return "PMC";
 	case PCH_DEVFN_UART0:	return "UAR0";
 	case PCH_DEVFN_UART1:	return "UAR1";
 	case PCH_DEVFN_UART2:	return "UAR2";