ufs: core: remove link_startup_again logic

The link_startup_again logic was added in Linux to handle device
that were set in LinkDown state, which should not be the case since U-boot
doesn't set LinkDown state are init, and Linux sets the device active
in ufshcd_init() for the first link startup.

ufshcd_set_ufs_dev_active(hba) is called at ufshcd_init() right before
scheduling an ufshcd_async_scan that will call ufshcd_device_init() then ufshcd_link_startup().

The comment in probe says:
    /*
     * We are assuming that device wasn't put in sleep/power-down
     * state exclusively during the boot stage before kernel.
     * This assumption helps avoid doing link startup twice during
     * ufshcd_probe_hba().
     */
we can assume the same from U-Boot.

While it worked to far, it breaks link startup for Qualcomm Controllers v5,
let's just remove the logic.

Tested-by: Venkatesh Yadav Abbarapu <[email protected]>
Tested-by: Julius Lehmann <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Neil Armstrong <[email protected]>

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