Handle Intel Wildcat Point *LP* like Lynx Point LP

The subtle difference was ignored when adding these chipsets. The
integrated Wildcat Point LP PCH is documented in [1].

I'm not sure how to account for "Broadwell H" which seems not publicly
documented. Maybe it's an unreleased HM9*, in which case the non-LP
path should be correct.

[1] Mobile 5th Generation Intel® Core(TM) Processor Family I/O,
    Intel® Core(TM) M Processor Family I/O, Mobile Intel® Pentium® Processor
    Family I/O, and Mobile Intel® Celeron® Processor Family I/O Datasheet
    Revision 004
    Document Number: 330837

Change-Id: I6b7ca3c0bde111b04ed7c745ed76d28d3d05f01c
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/18883
Reviewed-by: Youness Alaoui <snifikino@gmail.com>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/ich_descriptors.c b/ich_descriptors.c
index 7e2521a..34100cb 100644
--- a/ich_descriptors.c
+++ b/ich_descriptors.c
@@ -139,7 +139,8 @@
 	case CHIPSET_8_SERIES_LYNX_POINT:
 	case CHIPSET_8_SERIES_LYNX_POINT_LP:
 	case CHIPSET_8_SERIES_WELLSBURG:
-	case CHIPSET_9_SERIES_WILDCAT_POINT: {
+	case CHIPSET_9_SERIES_WILDCAT_POINT:
+	case CHIPSET_9_SERIES_WILDCAT_POINT_LP: {
 		uint8_t size_enc;
 		if (idx == 0) {
 			size_enc = desc->component.dens_new.comp1_density;
@@ -183,6 +184,7 @@
 	case CHIPSET_8_SERIES_LYNX_POINT_LP:
 	case CHIPSET_8_SERIES_WELLSBURG:
 	case CHIPSET_9_SERIES_WILDCAT_POINT:
+	case CHIPSET_9_SERIES_WILDCAT_POINT_LP:
 		return freq_str[value];
 	case CHIPSET_ICH_UNKNOWN:
 	default:
@@ -821,6 +823,7 @@
 	case CHIPSET_8_SERIES_LYNX_POINT_LP:
 	case CHIPSET_8_SERIES_WELLSBURG:
 	case CHIPSET_9_SERIES_WILDCAT_POINT:
+	case CHIPSET_9_SERIES_WILDCAT_POINT_LP:
 		if (idx == 0) {
 			size_enc = desc->component.dens_new.comp1_density;
 		} else {