[U-Boot] [PATCH 3/5] tools: fix define2mk.sed to not add quotes around negative integers

[Masahiro Yamada <yamada.masahiro@socionext.com>]

The sed script, tools/scripts/define2mk.sed, converts config defines
from C headers into include/autoconf.mk for the use in Makefiles.

I found the tool adds quotes around negative integer values.

For example, at the point of the v2016.07-rc1 tag,
include/configs/microblaze-generic.h defines
  #define CONFIG_BOOTDELAY         -1     /* -1 disables auto-boot */

Because it is an integer option, it should be converted to:
  CONFIG_BOOTDELAY=-1

But, the script actually converts it to:
  CONFIG_BOOTDELAY="-1"

This is a fatal problem for the tools/moveconfig.py because it parses
include/autoconf.mk for the config defines from the board headers.
CONFIG_BOOTDELAY="-1" is considered as a string type option and it
is dropped due to the type mismatch from the entry in Kconfig.

Before commit bb597c0eeb7e ("common: bootdelay: move CONFIG_BOOTDELAY
into a Kconfig option"), several boards defined CONFIG_BOOTDELAY as -1
but they are all gone now.

I will fix the mis-converted options right away, but first I need to
fix the script so that tools/moveconfig.py can convert integer config
options with a negative value correctly.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

 tools/scripts/define2mk.sed | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/scripts/define2mk.sed b/tools/scripts/define2mk.sed
index c641edf..0f00285 100644
--- a/tools/scripts/define2mk.sed
+++ b/tools/scripts/define2mk.sed
@@ -22,6 +22,8 @@
 	s/=\(..*\)/="\1"/;
 	# but remove again from decimal numbers
 	s/="\([0-9][0-9]*\)"/=\1/;
+	# ... and from negative decimal numbers
+	s/="\(-[1-9][0-9]*\)"/=\1/;
 	# ... and from hex numbers
 	s/="\(0[Xx][0-9a-fA-F][0-9a-fA-F]*\)"/=\1/;
 	# ... and from configs defined from other configs
-- 
1.9.1