Remove ata_port_resume_async() and replace it with a modified
ata_port_resume() taking an additional bool argument indicating if
ata EH resume operation should be executed synchronously or
asynchronously. With this change, the variable ata_port_resume_ehi is
not longer necessary and its value (ATA_EHI_XXX flags) passed directly
to ata_port_request_pm().
Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>