Use 'common' as name for the common irq number in hwmod data for the McBSP
ports. The same name already in use for OMAP2430, and the OMAP4 hwmod data
will be using the same name.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>