TF-TF: Store boot parameters

This patch adds support for storing fw_config and hw_config
addresses passed as arg0 and arg1 parameters in x0, x1 from
BL31.

Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Change-Id: I58ae379bb4a7ef1b6ce60a4e252c65d34dc14464
diff --git a/tftf/framework/main.c b/tftf/framework/main.c
index a2e84b7..2523a97 100644
--- a/tftf/framework/main.c
+++ b/tftf/framework/main.c
@@ -41,6 +41,10 @@
 
 static unsigned int test_is_rebooting;
 
+/* Parameters arg0 and arg1 passed from BL31 */
+u_register_t fw_config_base;
+u_register_t hw_config_base;
+
 static inline const test_suite_t *current_testsuite(void)
 {
 	test_ref_t test_to_run;