ARM: OMAP: Export more mcbsp functions

this patch only export two more functions to been used externally, for read
and write in polled mode.without the need of irqs.
Signed-off-by: Luis Vitorio Cargnini <lvcargnini@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/mcbsp.c

@@ -1022,6 +1022,8 @@ EXPORT_SYMBOL(omap_mcbsp_set_io_type);
 EXPORT_SYMBOL(omap_mcbsp_free);
 EXPORT_SYMBOL(omap_mcbsp_start);
 EXPORT_SYMBOL(omap_mcbsp_stop);
+EXPORT_SYMBOL(omap_mcbsp_pollread);
+EXPORT_SYMBOL(omap_mcbsp_pollwrite);
 EXPORT_SYMBOL(omap_mcbsp_xmit_word);
 EXPORT_SYMBOL(omap_mcbsp_recv_word);
 EXPORT_SYMBOL(omap_mcbsp_xmit_buffer);