Bump buidlroot version to 2018.02.6

bsp/buildroot/package/opkg/Config.in

@@ -4,17 +4,18 @@ comment "opkg needs a toolchain w/ wchar"
 
 config BR2_PACKAGE_OPKG
 	bool "opkg"
-	select BR2_PACKAGE_LIBARCHIVE
 	depends on BR2_USE_MMU # fork()
 	depends on BR2_USE_WCHAR # libarchive
+	select BR2_PACKAGE_LIBARCHIVE
 	help
-	  Opkg is a lightweight package management system, based on ipkg. It is
-	  written in C and resembles apt/dpkg in operation. It is intended for
-	  use on embedded Linux devices.
-	  Opkg is maintained, stable, robust and conservative in its memory
-	  usage, despite its buggy ipkg ancestry. As best it can, opkg
-	  maintains backwards compatibility with ipkg and conforms to a subset
-	  of debian's policy manual regarding control files.
+	  Opkg is a lightweight package management system, based on
+	  ipkg. It is written in C and resembles apt/dpkg in
+	  operation. It is intended for use on embedded Linux devices.
+	  Opkg is maintained, stable, robust and conservative in its
+	  memory usage, despite its buggy ipkg ancestry. As best it
+	  can, opkg maintains backwards compatibility with ipkg and
+	  conforms to a subset of debian's policy manual regarding
+	  control files.
 
 	  http://code.google.com/p/opkg/
 

bsp/buildroot/package/opkg/opkg.hash

@@ -0,0 +1,2 @@
+# Locally computed
+sha256 2ec7157ccf866e49ca139e3632ba1ca9d61dc24382606b55062e423161a530b0  opkg-v0.3.1.tar.gz

bsp/buildroot/package/opkg/opkg.mk

@@ -9,7 +9,7 @@ OPKG_SITE = http://git.yoctoproject.org/git/opkg
 OPKG_SITE_METHOD = git
 # Uses PKG_CHECK_MODULES() in configure.ac
 OPKG_DEPENDENCIES = host-pkgconf libarchive
-OPKG_LICENSE = GPLv2+
+OPKG_LICENSE = GPL-2.0+
 OPKG_LICENSE_FILES = COPYING
 OPKG_INSTALL_STAGING = YES
 OPKG_CONF_OPTS = --disable-curl