m68knommu: ColdFire 5271 only has a single FEC controller

The inclusion of multiple FEC ethernet platform devices is based around
the FEC address definitions in the platform headers. The ColdFire m527x
platform is defining 2 FEC modules, but the 5271 SoC only has a single
FEC hardware module. The attempt to probe and init a second FEC module
causes a trap and dump on boot on this platform.

Fix the definitions so that only the 5275 SoC platform (which has 2 FEC
hardware modules) defines the second base address.
Reported-by: ertheb <3rth3bnospam@ethe.fr>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

arch/m68k/include/asm/m527xsim.h

@@ -103,8 +103,10 @@
  */
 #define	MCFFEC_BASE0		(MCF_IPSBAR + 0x1000)
 #define	MCFFEC_SIZE0		0x800
+#ifdef CONFIG_M5275
 #define	MCFFEC_BASE1		(MCF_IPSBAR + 0x1800)
 #define	MCFFEC_SIZE1		0x800
+#endif
 
 /*
  *	QSPI module.