PCI: pciehp: Combine adjacent indicator updates

Combine adjacent updates of power and attention indicators into a single
pciehp_set_indicators() call.  This sends one command to the hotplug
controller instead of two.

Link: https://lore.kernel.org/r/20190903111021.1559-3-efremov@linux.com


Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>