ARM: OMAP4+: hwmod code: remove clkdm requirement in _omap4_wait_target_*()

We're no longer requiring struct omap_hwmod records to contain a
clockdomain.  So we shouldn't return -EINVAL any more from
_omap4_wait_target_disable() or _omap4_wait_target_ready() if there's
no clockdomain defined, since that just gets passed back to the
caller.  This can result in pointless warnings under the relaxed data
format.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>

arch/arm/mach-omap2/omap_hwmod.c

@@ -927,10 +927,10 @@ static void _am33xx_enable_module(struct omap_hwmod *oh)
  */
 static int _omap4_wait_target_disable(struct omap_hwmod *oh)
 {
-	if (!oh || !oh->clkdm)
+	if (!oh)
 		return -EINVAL;
 
-	if (oh->_int_flags & _HWMOD_NO_MPU_PORT)
+	if (oh->_int_flags & _HWMOD_NO_MPU_PORT || !oh->clkdm)
 		return 0;
 
 	if (oh->flags & HWMOD_NO_IDLEST)
@@ -2635,10 +2635,10 @@ static int _omap2_wait_target_ready(struct omap_hwmod *oh)
  */
 static int _omap4_wait_target_ready(struct omap_hwmod *oh)
 {
-	if (!oh || !oh->clkdm)
+	if (!oh)
 		return -EINVAL;
 
-	if (oh->flags & HWMOD_NO_IDLEST)
+	if (oh->flags & HWMOD_NO_IDLEST || !oh->clkdm)
 		return 0;
 
 	if (!_find_mpu_rt_port(oh))