ttyd: Add dependency for vim

Needed to avoid error in case xxd is not installed:

[ 16%] Generating html.h from index.html
/bin/sh: 1: CMAKE_XXD-NOTFOUND: not found
CMakeFiles/ttyd.dir/build.make:61: recipe for target 'html.h' failed
make[6]: *** [html.h] Error 127

Signed-off-by: Rosen Penev <rosenp@gmail.com>

utils/ttyd/Makefile

@@ -9,17 +9,16 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ttyd
 PKG_VERSION:=1.4.2
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_URL:=https://codeload.github.com/tsl0922/ttyd/tar.gz/$(PKG_VERSION)?
-PKG_SOURCE_VERSION=$(PKG_VERSION)
-PKG_HASH=ff1a66b418df6cd741868a8ea84f69cd63f15e52e3fa117641ec57d3c37a1315
+PKG_HASH:=ff1a66b418df6cd741868a8ea84f69cd63f15e52e3fa117641ec57d3c37a1315
 
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=LICENSE
 
+PKG_BUILD_DEPENDS:=vim/host
 CMAKE_INSTALL:=1
 
 include $(INCLUDE_DIR)/package.mk