flashchips: Add Fudan FM25Q02/Q04 3.3V parts

These smallest two in the series seem to have the same status-
register layout. They look almost feature-complete, with only
a SEC-bit missing.

Datasheets used:
http://eng.fmsh.com/nvm/FM25Q02_ds_eng.pdf
http://eng.fmsh.com/nvm/FM25Q04_ds_eng.pdf

Change-Id: Ic267ddd2b33b63e72ad923f2bbe0af29aaa6bf93
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.sourcearcade.org/c/flashprog/+/287
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/include/flashchips.h b/include/flashchips.h
index ca81eea..0fa1afe 100644
--- a/include/flashchips.h
+++ b/include/flashchips.h
@@ -348,6 +348,8 @@
 #define FUDAN_FM25F01		0x3111
 #define FUDAN_FM25F02		0x3112	/* Same as FM25F02A */
 #define FUDAN_FM25F04		0x3113	/* Same as FM25F04A */
+#define FUDAN_FM25Q02		0x4012
+#define FUDAN_FM25Q04		0x4013
 #define FUDAN_FM25Q08		0x4014
 #define FUDAN_FM25Q16		0x4015
 #define FUDAN_FM25Q32		0x4016