features: add pwm-lpss-platform to baytrail

pwm-lpss now needs pwm-lpss-platform for device detection.

Signed-off-by: California Sullivan <california.l.sullivan@intel.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

features/soc/baytrail/baytrail.cfg

@@ -39,6 +39,7 @@ CONFIG_DW_DMAC_PCI=m
 # PWM Support
 CONFIG_PWM=y
 CONFIG_PWM_LPSS=m
+CONFIG_PWM_LPSS_PLATFORM=m
 
 # USB Device Support
 CONFIG_USB_DWC3=y