Set maximum flash size for 3Com NICs to 128kb = 1Mbit

This fact was already documented on http://flashrom.org/NIC3Com

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

Index: nic3com.c
===================================================================
--- nic3com.c	(revision 1048)
+++ nic3com.c	(revision 1049)
@@ -81,6 +81,7 @@
 	OUTW(SELECT_REG_WINDOW + 0, io_base_addr + INT_STATUS);
 
 	buses_supported = CHIP_BUSTYPE_PARALLEL;
+	max_rom_decode.parallel = 128 * 1024;
 
 	return 0;
 }