ich_descriptors: Modify limits for C620/Lewisburg PCH

Change-Id: Ic8adc4b87993e65096166fa6d665432697070b4c
Signed-off-by: David Hendricks <dhendricks@fb.com>
Reviewed-on: https://review.coreboot.org/20936
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/ich_descriptors.h b/ich_descriptors.h
index 8c313d1..574bc5f 100644
--- a/ich_descriptors.h
+++ b/ich_descriptors.h
@@ -165,7 +165,7 @@
 	};
 };
 
-#define MAX_NUM_FLREGS 10 /* 16 on unsupported Lewisburg PCH */
+#define MAX_NUM_FLREGS 16
 struct ich_desc_region {
 	/*
 	 * Number of entries and width differ on various generations:
@@ -174,6 +174,7 @@
 	 * ICH8			.. Panther Point/7	 5		13
 	 * Lynx Point/8		.. Wildcat Point/9	 7		15
 	 * Sunrise Point/100	..			10		15
+	 * Lewisburg/100	..			16		15
 	 */
 	union {
 		uint32_t FLREGs[MAX_NUM_FLREGS]; /* Flash Descriptor Regions */
@@ -188,7 +189,7 @@
 	};
 };
 
-#define MAX_NUM_MASTERS 5 /* 6 on unsupported Lewisburg PCH */
+#define MAX_NUM_MASTERS 6 /* 5 prior to C620/Lewisburg PCH */
 struct ich_desc_master {
 	union {
 		uint32_t FLMSTRs[MAX_NUM_MASTERS]; /* Flash Masters */