tls: make tls_get_random() FAST_FUNC

function                                             old     new   delta
tls_handshake                                       1977    1985      +8
tls_get_random                                        32      28      -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 8/-4)                Total: 4 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/tls.h b/networking/tls.h
index 1d379c1..f2ef67a 100644
--- a/networking/tls.h
+++ b/networking/tls.h
@@ -80,7 +80,7 @@
 
 #define AES_BLOCK_SIZE  16
 
-void tls_get_random(void *buf, unsigned len);
+void tls_get_random(void *buf, unsigned len) FAST_FUNC;
 
 #define matrixCryptoGetPrngData(buf, len, userPtr) (tls_get_random(buf, len), PS_SUCCESS)