[ARM] 3380/1: ixp2000: simplify ixdp2x00_master_npu() check

Patch from Lennert Buytenhek

On the IXDP2x00s, the NPU that is PCI master is always the egress
(i.e. 'master') NPU.  At least on the IXDP2800, both NPUs have flash,
so the ixp2000_has_flash() check in ixdp2x00_master_npu() is useless.
Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

include/asm-arm/arch-ixp2000/ixdp2x00.h

@@ -72,12 +72,11 @@
 
 #ifndef __ASSEMBLY__
 /*
- * Master NPU will always have flash and be PCI master.
- * Slave NPU may or may not have flash but will never be PCI master.
+ * The master NPU is always PCI master.
  */
 static inline unsigned int ixdp2x00_master_npu(void)
 {
-	return ((ixp2000_has_flash()) && (ixp2000_is_pcimaster()));
+	return !!ixp2000_is_pcimaster();
 }
 
 /*