parisc: Increase PCI mapping space with PARISC_MMIO_LIMIT

Increase the limit for which the PCI memory region is mapped into
shared memory. This fixes loading of megaraid-sas driver.

Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c
index d79fb56..55f331a 100644
--- a/src/fw/pciinit.c
+++ b/src/fw/pciinit.c
@@ -513,7 +513,7 @@
  * parisc: If mmio bar is bigger than this size, map the bar it into the
  * directed ELMMIO instead of the distributed LMMIO region.
  */
-#define PARISC_MMIO_LIMIT       0x10000
+#define PARISC_MMIO_LIMIT       0x40000
 
 #if CONFIG_PARISC
 static int dino_pci_slot_get_irq(struct pci_device *pci, int pin)