nyan*: Fix unexpected symbol (CR) when converting DOS-formatted BCT config.

There are some unexpected symbol at the end of each line in the
generated .inc file when the config file is in DOS format (CR+LF).
Modify cfg2inc to support DOS format cfg file by removing carriage return symbols from the end of each line.

BUG=chrome-os-partner:27614
TEST=sudo cfg2inc.sh XXX.cfg # make a expected inc file

BRANCH=nyan
Signed-off-by: Neil Chen <neilc@nvidia.com>

Original-Change-Id: I68b0f4b3805fcb5a6b633653c95afbafcb880a93
Original-Reviewed-on: https://chromium-review.googlesource.com/192697
Original-Tested-by: Neil Chen <neilc@nvidia.com>
Original-Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Original-Commit-Queue: Neil Chen <neilc@nvidia.com>
(cherry picked from commit 38e90ab0d9110d3ede39c70e27961b833813a7d4)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I30737600fa8ac12a45ad0fbc6086a624993794e7
Reviewed-on: http://review.coreboot.org/7741
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)

src/mainboard/google/nyan/bct/cfg2inc.sh

@@ -23,7 +23,7 @@ bct_cfg2inc() {
 	echo "{ /* generated from ${in_file}; do not edit. */" >"${out_file}"
 	# Note currently we can only handle DDR3 type memory, even in C
 	# implementation.
-	sed "/^#.*$/d; s/^SDRAM.0./  /; s/;$/,/;" \
+	sed "/^#.*$/d; s/^SDRAM.0./  /; s/\r$//; s/;$/,/;" \
 		"${in_file}" >> "${out_file}"
 	echo "}," >>"${out_file}"
 }