Bump buildroot to 2019.02

bsp/buildroot/package/keyutils/0001-fix-install-rule.patch

@@ -6,15 +6,17 @@ the host library.
 Based on the former patch by Yann E. MORIN.
 
 Signed-off-by: Vicente Olivert Riera <vincent.riera@imgtec.com>
+[baruch: update for 1.6]
+Signed-off-by: Baruch Siach <baruch@tkos.co.il>
 
 --- keyutils-1.5.9/Makefile.orig	2014-09-22 16:13:41.593562765 +0100
 +++ keyutils-1.5.9/Makefile	2014-09-22 16:14:05.377963952 +0100
-@@ -168,7 +168,7 @@ ifeq ($(NO_SOLIB),0)
+@@ -184,7 +184,7 @@ ifeq ($(NO_SOLIB),0)
  	$(INSTALL) -D $(LIBNAME) $(DESTDIR)$(LIBDIR)/$(LIBNAME)
  	$(LNS) $(LIBNAME) $(DESTDIR)$(LIBDIR)/$(SONAME)
  	mkdir -p $(DESTDIR)$(USRLIBDIR)
 -	$(LNS) $(LIBDIR)/$(SONAME) $(DESTDIR)$(USRLIBDIR)/$(DEVELLIB)
 +	$(LNS) $(SONAME) $(DESTDIR)$(USRLIBDIR)/$(DEVELLIB)
- endif
- 	$(INSTALL) -D keyctl $(DESTDIR)$(BINDIR)/keyctl
- 	$(INSTALL) -D request-key $(DESTDIR)$(SBINDIR)/request-key
+ 	sed \
+ 	-e 's,@VERSION\@,$(VERSION),g' \
+ 	-e 's,@prefix\@,$(PREFIX),g' \