Add board enable for the EPoX EP-BX3

Corresponding to flashrom svn r125 and coreboot v2 svn r2743.

Signed-off-by: Luc Verhaegen <libv@skynet.be>
Acked-by: Peter Stuge <peter@stuge.se>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/README b/README
index 8aec2a0..12be20d 100644
--- a/README
+++ b/README
@@ -54,6 +54,7 @@
 * Agami Aruma: use -m AGAMI:ARUMA
 * ASUS P5A: use -m asus:p5a
 * IBM x3455: use -m ibm:x3455
+* EPoX EP-BX3: use -m epox:ep-bx3
 
 
 ROM Layout Support