[POWERPC] ppc: Fix PCIX configuration of Ocotea & Taishan for > 512MB DDR

Change the configuration of the PCIX PCI->PLB inbound memory window
to be 2GB instead of 512kB. The comment already mentioned 2GB, but the
code unfortunately didn't reflect this.
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/ppc/platforms/4xx/ocotea.c

@@ -178,7 +178,7 @@ ocotea_setup_pcix(void)
 	/* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
 	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
 	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
-	PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
+	PCIX_WRITEL(0x80000007, PCIX0_PIM0SA);
 
 	eieio();
 }

arch/ppc/platforms/4xx/taishan.c

@@ -235,7 +235,7 @@ taishan_setup_pcix(void)
 	/* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
 	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
 	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
-	PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
+	PCIX_WRITEL(0x80000007, PCIX0_PIM0SA);
 	PCIX_WRITEL(0xffffffff, PCIX0_PIM0SAH);
 
 	iounmap(pcix_reg_base);