media: tw5864: Convert to use managed functions pcim* and devm*

media: tw5864: Convert to use managed functions pcim* and devm*

When removing the module, we will get the follow flaw:

[   69.323999] remove_proc_entry: removing non-empty directory 'irq/21', leaking at least 'tw5864'
[   69.324449] WARNING: CPU: 0 PID: 395 at fs/proc/generic.c:717 remove_proc_entry+0x389/0x3f0
[   69.326909] RIP: 0010:remove_proc_entry+0x389/0x3f0
[   69.331089] Call Trace:
[   69.331215]  <TASK>
[   69.331327]  unregister_irq_proc+0x14c/0x170
[   69.332579]  tw5864_finidev+0x12a/0x190 [tw5864]
[   69.332811]  pci_device_remove+0x92/0x240

Fix this by using managed functions, this makes the error handling more
simpler.

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>