tcg: Make some tcg-target.c routines static.

Both tcg_target_init and tcg_target_qemu_prologue
are unused outside of tcg.c.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index 8745ad1..147ba17 100644
--- a/tcg/i386/tcg-target.c
+++ b/tcg/i386/tcg-target.c
@@ -1430,7 +1430,7 @@
 };
 
 /* Generate global QEMU prologue and epilogue code */
-void tcg_target_qemu_prologue(TCGContext *s)
+static void tcg_target_qemu_prologue(TCGContext *s)
 {
     int i, frame_size, push_size, stack_addend;
 
@@ -1458,7 +1458,7 @@
     tcg_out_opc(s, OPC_RET);
 }
 
-void tcg_target_init(TCGContext *s)
+static void tcg_target_init(TCGContext *s)
 {
 #if !defined(CONFIG_USER_ONLY)
     /* fail safe */