Change the e1000 mmio addr space according to spec.

According to the Intel 82540EM manual, the mmio space is
128k size.
Copied from Xen list and noted by tina..yang@oracle.com
Signed-off-by: NDor Laor <dor.laor@qumranet.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4032 c046a42c-6fe2-441c-8c8c-71466251a162

hw/e1000.c

@@ -50,7 +50,7 @@ static int debugflags = DBGBIT(TXERR) | DBGBIT(GENERAL);
 #endif
 
 #define IOPORT_SIZE       0x40
-#define PNPMMIO_SIZE      0x60000
+#define PNPMMIO_SIZE      0x20000
 
 /*
  * HW models: