[PATCH v1 6/8] toradex: common: Remove #ifdef usage for 2nd ethaddr

[sbabic at denx.de]

> Fix checkpatch warn, use `IS_ENABLED(CONFIG_TDX_CFG_BLOCK_2ND_ETHADDR)`
> instead of `#ifdef CONFIG_TDX_CFG_BLOCK_2ND_ETHADDR`.
> Signed-off-by: Francesco Dolcini <francesco.dolcini at toradex.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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