Makefile: honor silent (-s) flag

package/Makefile.in

@@ -9,6 +9,12 @@ HOSTMAKE :=$(shell $(CONFIG_SHELL) -c "which $(HOSTMAKE)" || type -p $(HOSTMAKE)
 MAKE1:=$(HOSTMAKE) MAKE="$(firstword $(HOSTMAKE)) -j1"
 MAKE:=$(HOSTMAKE) -j$(BR2_JLEVEL)
 
+# honor silent mode
+ifeq (s,$(findstring s,$(MAKEFLAGS)))
+MAKE1+= -s
+MAKE+= -s
+endif
+
 ifeq ($(BR2_OPTIMIZE_0),y)
 TARGET_OPTIMIZATION=-O0
 endif