PCI/ASPM: Use boolean type for aspm_disabled and aspm_force

PCI/ASPM: Use boolean type for aspm_disabled and aspm_force

The aspm_disabled and aspm_force variables are used as boolean flags.
Change their type from int to bool and update assignments to use
true/false instead of 1/0. This improves code clarity.

Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://patch.msgid.link/20250517154939.139237-1-18255117159@163.com