Bump buidlroot version to 2018.02.6

bsp/buildroot/package/leveldb/0002-Add-install-recipe.patch

@@ -9,6 +9,8 @@ Signed-off-by: Steve James <ste@junkomatic.net>
 Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
 [baruch: update for v1.19]
 Signed-off-by: Baruch Siach <baruch@tkos.co.il>
+[Bernd: update for v1.20]
+Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
 ---
  Makefile | 14 ++++++++++++++
  1 file changed, 14 insertions(+)
@@ -19,8 +21,8 @@ index 07a5a1ead6fd..c87023db527a 100644
 +++ b/Makefile
 @@ -412,3 +412,17 @@ $(SHARED_OUTDIR)/%.o: %.cc
  
- $(SHARED_OUTDIR)/%.o: %.c
- 	$(CC) $(CFLAGS) $(PLATFORM_SHARED_CFLAGS) -c $< -o $@
+ $(SHARED_OUTDIR)/port/port_posix_sse.o: port/port_posix_sse.cc
+ 	$(CXX) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(PLATFORM_SSEFLAGS) -c $< -o $@
 +
 +INSTALL_ROOT = /
 +INSTALL_PREFIX= usr/local

bsp/buildroot/package/leveldb/Config.in

@@ -6,8 +6,9 @@ config BR2_PACKAGE_LEVELDB
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_SNAPPY
 	help
-	  LevelDB is a fast key-value storage library written at Google that
-	  provides an ordered mapping from string keys to string values.
+	  LevelDB is a fast key-value storage library written at Google
+	  that provides an ordered mapping from string keys to string
+	  values.
 
 	  https://github.com/google/leveldb
 

bsp/buildroot/package/leveldb/leveldb.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256 7d7a14ae825e66aabeb156c1c3fae9f9a76d640ef6b40ede74cc73da937e5202  leveldb-v1.19.tar.gz
+sha256 f5abe8b5b209c2f36560b75f32ce61412f39a2922f7045ae764a2c23335b6664  leveldb-v1.20.tar.gz

bsp/buildroot/package/leveldb/leveldb.mk

@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-LEVELDB_VERSION = v1.19
+LEVELDB_VERSION = v1.20
 LEVELDB_SITE = $(call github,google,leveldb,$(LEVELDB_VERSION))
-LEVELDB_LICENSE = BSD-3c
+LEVELDB_LICENSE = BSD-3-Clause
 LEVELDB_LICENSE_FILES = LICENSE
 LEVELDB_INSTALL_STAGING = YES
 LEVELDB_DEPENDENCIES = snappy