On vybrid, lpuart's registers are 8-bit. On LS102xA, lpuart's registers
are 32-bit. This patch adds the support for 32-bit registers on
LS102xA.
Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Signed-off-by: Yuan Yao <yao.yuan@freescale.com>