Add hidapi to depends

Clang needs to get its cctools path passed directly for the hid build to
succeed.
Make gperf a permanent external dependency.
Remove pcsc from depends.

contrib/depends/packages/hidapi.mk

@@ -0,0 +1,23 @@
+package=hidapi
+$(package)_version=0.8.0-rc1
+$(package)_download_path=https://github.com/signal11/hidapi/archive
+$(package)_file_name=$(package)-$($(package)_version).tar.gz
+$(package)_sha256_hash=3c147200bf48a04c1e927cd81589c5ddceff61e6dac137a605f6ac9793f4af61
+
+define $(package)_set_vars
+$(package)_config_opts=--enable-static
+$(package)_config_opts+=--prefix=$(host_prefix)
+endef
+
+define $(package)_config_cmds
+  ./bootstrap &&\
+  $($(package)_autoconf) $($(package)_config_opts)
+endef
+
+define $(package)_build_cmds
+  $(MAKE)
+endef
+
+define $(package)_stage_cmds
+  $(MAKE) DESTDIR=$($(package)_staging_dir) install
+endef