pcengines boards: Update board_info files

This updates board info of PC Engines platforms, changes board names
to official manufacturer's names and adds info about ROM. Removing 
"Clone of" option for ALIX platforms makes them independent.

Change-Id: Ie76d65ea84f14b9043a8e5b86678a9da4c187cc9
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/21722
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Piotr Król <piotr.krol@3mdeb.com>
Reviewed-by: Martin Roth <martinroth@google.com>

src/mainboard/pcengines/alix1c/board_info.txt

@@ -1,5 +1,9 @@
-Category: half
+Board name: alix1c
 Board URL: http://pcengines.ch/alix1c.htm
+Category: half
+ROM package: PLCC-32
+ROM protocol: LPC
+ROM socketed: n
 Flashrom support: y
 Vendor cooperation score: 4
 Vendor cooperation page: PC Engines ALIX.1C Vendor Cooperation Score

src/mainboard/pcengines/alix2c/board_info.txt

@@ -1,4 +1,7 @@
-Category: half
+Board name: alix2c
 Board URL: http://pcengines.ch/alix2c3.htm
+Category: half
+ROM package: TSOP-32
+ROM protocol: LPC
+ROM socketed: n
 Flashrom support: y
-Clone of: pcengines/alix2d

src/mainboard/pcengines/alix2d/board_info.txt

@@ -1,3 +1,7 @@
-Category: half
+Board name: alix2d
 Board URL: http://pcengines.ch/alix2d0.htm
+Category: half
+ROM package: TSOP-32
+ROM protocol: LPC
+ROM socketed: n
 Flashrom support: y

src/mainboard/pcengines/alix6/board_info.txt

@@ -1,4 +1,7 @@
-Category: half
+Board name: alix6f
 Board URL: http://pcengines.ch/alix6f2.htm
+Category: half
+ROM package: TSOP-32
+ROM protocol: LPC
+ROM socketed: n
 Flashrom support: y
-Clone of: pcengines/alix2d

src/mainboard/pcengines/apu1/board_info.txt

@@ -1,5 +1,7 @@
-Board name: APU1
+Board name: apu1
+Board URL: http://www.pcengines.ch/apu1d4.htm
 Category: half
+ROM package: SOIC-8
 ROM protocol: SPI
 ROM socketed: n
 Flashrom support: y

src/mainboard/pcengines/apu2/board_info.txt

@@ -1,6 +1,7 @@
-Board name: PC Engines APU2
+Board name: apu2
 Board URL: http://www.pcengines.ch/apu2c2.htm
 Category: half
+ROM package: SOIC-8
 ROM protocol: SPI
 ROM socketed: n
 Flashrom support: y