TQM834x: remove defines causing gcc4.4 warnings

Configuring for TQM834x board...
cpu_init.c: In function 'cpu_init_f':
cpu_init.c:262: warning: array subscript is above array bounds
cpu_init.c:263: warning: array subscript is above array bounds
cpu_init.c:270: warning: array subscript is above array bounds
...

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>