buildroot: select util-linux-libs, libuuid and pkgconf

In order to use login methods `TEEC_LOGIN_USER` and `TEEC_LOGIN_GROUP`,
a user space application must initialize the tokens with the SHA1
hashed UUID of the user or group.

Select host-pkgconf, util-linux and libuuid in order to use `libuuid`
and add supporting libraries to optee_client for this type of ACL based
login initialization.

Signed-off-by: Eero Aaltonen <eero.aaltonen@vaisala.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

br-ext/package/optee_client_ext/Config.in

@@ -1,5 +1,8 @@
 config BR2_PACKAGE_OPTEE_CLIENT_EXT
 	bool "optee_client"
+	select BR2_PACKAGE_UTIL_LINUX
+	select BR2_PACKAGE_UTIL_LINUX_LIBS
+	select BR2_PACKAGE_UTIL_LINUX_LIBUUID
 	help
 	  http://github.org/OP-TEE/optee_client
 

br-ext/package/optee_client_ext/optee_client_ext.mk

@@ -2,6 +2,7 @@ OPTEE_CLIENT_EXT_VERSION = 1.0
 OPTEE_CLIENT_EXT_SOURCE = local
 OPTEE_CLIENT_EXT_SITE = $(BR2_PACKAGE_OPTEE_CLIENT_EXT_SITE)
 OPTEE_CLIENT_EXT_SITE_METHOD = local
+OPTEE_CLIENT_EXT_DEPENDENCIES = host-pkgconf util-linux-libs
 OPTEE_CLIENT_EXT_INSTALL_STAGING = YES
 
 ifeq ($(BR2_PACKAGE_OPTEE_BENCHMARK_EXT),y)