libahci_platform: add host_flags parameter in ahci_platform_init_host()

Add a dynamic host_flags argument to make ahci_platform_init_host more flexible,
then remove the AHCI_HFLAGS(...) argument from some driver's ata_port_info,
and pass that in as the new argument.

Cc: Hans de Geode <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kefeng Wang <kefeng.wang@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --cc drivers/ata/ahci_da850.c
Simple merge

diff --cc drivers/ata/ahci_imx.c
Simple merge

diff --cc drivers/ata/ahci_mvebu.c
Simple merge

diff --cc drivers/ata/ahci_platform.c
Simple merge

diff --cc drivers/ata/ahci_st.c
Simple merge

diff --cc drivers/ata/ahci_sunxi.c
Simple merge

diff --cc drivers/ata/ahci_xgene.c
Simple merge

diff --cc drivers/ata/libahci_platform.c
Simple merge

diff --cc include/linux/ahci_platform.h
Simple merge