ich_descriptors: Pretty print voltage on supported platforms

Seems more and more important to have such clues about 1.8V parts.

Change-Id: Ida9a447d840d63a9fed7c48b3a18546e67284a44
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.sourcearcade.org/c/flashprog/+/396
diff --git a/include/ich_descriptors.h b/include/ich_descriptors.h
index df1a789..a068571 100644
--- a/include/ich_descriptors.h
+++ b/include/ich_descriptors.h
@@ -125,7 +125,9 @@
 		 * Sunrise Point/100:	48		30		7	0:3, 4:7
 		 */
 		struct {
-			uint32_t		:17,
+			uint32_t		:9,
+				 volt_sel	:1,
+						:7,
 				 freq_read	:3,
 				 fastread	:1,
 				 freq_fastread	:3,