plat: imx: imx8_iomux: fix shift-overflow errors

This fixes shift overflow errors, when compiled with CONSOLE_DEBUG
support:

plat/imx/common/include/imx8_iomux.h:11:35: error: result of β€˜1 << 31’
requires 33 bits to represent, but β€˜int’ only has 32 bits
[-Werror=shift-overflow=]

Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
Change-Id: I0488e22c30314ba27caabc5c767164baa1e8004c
1 file changed