soc: aspeed-lpc-ctrl: Fail probe of lpc-ctrl if reserved memory is not aligned

Alignment is a hardware constraint of the LPC2AHB bridge, and misaligned
reserved memory will present as corrupted data.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20191016233950.10100-1-andrew@aj.id.au


Signed-off-by: Joel Stanley <joel@jms.id.au>