Remove channeling interrupts to IRQ1. Some chipsets don't do the

expected thing and that causes interference with keyboards.

sys/dev/pccbb/pccbb.c

@@ -415,15 +415,22 @@ cbb_probe(device_t brdev)
  * interrupts.  These interrupts aren't really generated by the chip, since
  * IRQ1 is reserved.  Some chipsets assert INTA# inappropriately during
  * initialization, so this helps to work around the problem.
+ *
+ * XXX We can't do this workaround for all chipsets, because this
+ * XXX causes interference with the keyboard because somechipsets will
+ * XXX actually signal IRQ1 over their serial interrupt connections to
+ * XXX the south bridge.  Disable it it for now.
  */
 static void
 cbb_disable_func_intr(struct cbb_softc *sc)
 {
 	uint8_t reg;
 
+#if 0
 	reg = (exca_getb(&sc->exca, EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) | 
 	    EXCA_INTR_IRQ_RESERVED1;
 	exca_putb(&sc->exca, EXCA_INTR, reg);
+#endif
 }
 
 /*