vme: trivial spelling and capitalization fixes

Fix a typo in the spurious interrupt warning and consistently capitalize
VME, PCI, and DMA acronyms.

Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Acked-by: Martyn Welch <martyn@welchs.me.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>