[PATCH v2] ARM: imx: romapi: Fix signed integer bitwise ops misuse

[sbabic at denx.de]

> Bitwise operations on signed integers are not defined,
> replace them with per-call checks.
> Reviewed-by: Peng Fan <peng.fan at nxp.com>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Reviewed-by: Fabio Estevam <festevam at denx.de>
> Reviewed-by: Heiko Schocher <hs at denx.de>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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