ColdFire: Relocate vector table - mcf5445x

ColdFire: Relocate vector table - mcf5445x

Newer ColdFire processors family boot from address 0 instead of
0xFFnn_nnnn. When the boot flash base chip select is set at new
location instead of 0, an un-predictable error will occur if
there is an vector being trigger and refer it to an invalid
address or the vector table handler is not existed at address
0.

Signed-off-by: TsiChung Liew <tsicliew@gmail.com>