staging: vt6655: replace and resize dwIsr

dwIsr is not used outside vnt_interrupt_process and should
be u32.

Move to function and resize to u32.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 files changed