drm/hisilicon: Use the new api devm_drm_irq_install

Use devm_drm_irq_install to register interrupts so that
drm_irq_uninstall is not called when hibmc is removed.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1606901212-8214-4-git-send-email-tiantao6@hisilicon.com