Add support for Amic Technology A29040B flash chip

PROBE READ tested by Lyos Gemini Norezel on BioStar P4M80-M4.

Corresponding to flashrom svn r257 and coreboot v2 svn r3365.

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Lyos Gemini Norezel <lyos.gemininorezel@gmail.com>
diff --git a/flash.h b/flash.h
index b0d4623..b765555 100644
--- a/flash.h
+++ b/flash.h
@@ -119,6 +119,7 @@
 #define AMIC_ID			0x7F37	/* AMIC */
 #define AMIC_ID_NOPREFIX	0x37	/* AMIC */
 #define AMIC_A25L40P		0x2013
+#define AMIC_A29040B		0x86
 
 #define ASD_ID			0x25	/* ASD, not listed in JEP106W */
 #define ASD_AE49F2008		0x52