Add additional include directory, required by some packages

package/Makefile.in

@@ -26,7 +26,7 @@ TAR_OPTIONS=$(subst ",, $(BR2_TAR_OPTIONS)) -xf
 
 ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
 TARGET_CFLAGS=$(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING) \
-	-I$(STAGING_DIR)/usr/include
+	-I$(STAGING_DIR)/usr/include -I$(STAGING_DIR)/include
 TARGET_LDFLAGS=-L$(STAGING_DIR)/lib -L$(STAGING_DIR)/usr/lib
 
 ifeq ($(BR2_TOOLCHAIN_SYSROOT),y)