arm: mx6: cm_fx6: implement board specific sata stop

Provide board specific implementation for sata stop command for
cm_fx6.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Stefano Babic <sbabic@denx.de>

board/compulab/cm_fx6/cm_fx6.c

@@ -98,9 +98,6 @@ int sata_initialize(void)
 	/* Make sure this gpio has logical 0 value */
 	gpio_direction_output(CM_FX6_SATA_PWLOSS_INT, 0);
 	udelay(100);
-
-	cm_fx6_sata_power(0);
-	mdelay(250);
 	cm_fx6_sata_power(1);
 
 	for (i = 0; i < CM_FX6_SATA_INIT_RETRIES; i++) {
@@ -125,6 +122,15 @@ int sata_initialize(void)
 
 	return err;
 }
+
+int sata_stop(void)
+{
+	__sata_stop();
+	cm_fx6_sata_power(0);
+	mdelay(250);
+
+	return 0;
+}
 #else
 static int cm_fx6_setup_issd(void) { return 0; }
 #endif