change low res sleep func api names

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11486 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_resample.c

@@ -206,7 +206,7 @@ SWITCH_DECLARE(void) switch_generate_sln_silence(int16_t *data, uint32_t samples
 	int16_t x;
 	uint32_t i;
 	int sum_rnd = 0;
-	int16_t rnd2 = (int16_t) switch_timestamp_now();
+	int16_t rnd2 = (int16_t) switch_micro_time_now();
 
 	assert(divisor);