[MIPS] JAZZ fixes

- restructured irq handling
- switched vdma to use memory allocated via get_free_pages
- setup platform devices for serial, jazz_esp and jazzsonic
- fixed cmos rtc access

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index bb3fb40..a8bdc08 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -93,6 +93,7 @@
 	select ARC32
 	select ARCH_MAY_HAVE_PC_FDC
 	select GENERIC_ISA_DMA
+	select IRQ_CPU
 	select I8259
 	select ISA
 	select PCSPEAKER