board_info.txt: Add mentions of thin client names.

Based on info from old page

Change-Id: Ibd07b5904569e510de249e4216875438a855ff57
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4746
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

src/mainboard/asi/mb_5blgp/board_info.txt

@@ -1 +1,2 @@
+Board name: MB-5BLGP (Neoware Eon 4000s)
 Category: settop

src/mainboard/asi/mb_5blmp/board_info.txt

@@ -1,3 +1,4 @@
+Board name: MB-5BLMP (IGEL WinNET III)
 Category: settop
 Board URL: http://www.hojerteknik.com/winnet.htm
 Flashrom support: y

src/mainboard/bcom/winnet100/board_info.txt

@@ -1,3 +1,4 @@
 Category: settop
+Board name: WinNET100 (IGEL-316)
 Board URL: http://web.archive.org/web/20031207003521/http://www.igel.co.za/igel_316_compact.htm
 Flashrom support: y