spd: add static qualifier to locally used functions and data

These are used locally in a file.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/services/spd/tlkd/tlkd_main.c b/services/spd/tlkd/tlkd_main.c
index da3b732..961fd18 100644
--- a/services/spd/tlkd/tlkd_main.c
+++ b/services/spd/tlkd/tlkd_main.c
@@ -44,14 +44,14 @@
 		0xbd11e9c9, 0x2bba, 0x52ee, 0xb1, 0x72,
 		0x46, 0x1f, 0xba, 0x97, 0x7f, 0x63);
 
-int32_t tlkd_init(void);
+static int32_t tlkd_init(void);
 
 /*******************************************************************************
  * Secure Payload Dispatcher setup. The SPD finds out the SP entrypoint and type
  * (aarch32/aarch64) if not already known and initialises the context for entry
  * into the SP for its initialisation.
  ******************************************************************************/
-int32_t tlkd_setup(void)
+static int32_t tlkd_setup(void)
 {
 	entry_point_info_t *tlk_ep_info;
 
@@ -100,7 +100,7 @@
  * used. This function performs a synchronous entry into the Secure payload.
  * The SP passes control back to this routine through a SMC.
  ******************************************************************************/
-int32_t tlkd_init(void)
+static int32_t tlkd_init(void)
 {
 	entry_point_info_t *tlk_entry_point;
 
@@ -133,7 +133,7 @@
  * will also return any information that the secure payload needs to do the
  * work assigned to it.
  ******************************************************************************/
-uint64_t tlkd_smc_handler(uint32_t smc_fid,
+static uint64_t tlkd_smc_handler(uint32_t smc_fid,
 			 uint64_t x1,
 			 uint64_t x2,
 			 uint64_t x3,