v2023.07-rc5 regression: Image overlaps SPL

[Francesco Dolcini]

Hello Marek,
as briefly discussed off-list it looks like
commit 77aed22b48ab ("spl: spl_legacy: Add extra address checks") introduces a
regression on some board/arch, at least colibri and apalis imx6 fails to boot now

```
Trying to boot from MMC1
SPL: Image overlaps SPL
resetting ...
```

>From a quick check verdin imx8mm and imx8mp are not affected.

I also noticed something weird on a colibri imx7s, this is not using SPL,
likely something completly different, however given this is new also from rc5 I
thought it's valuable to report:

```
U-Boot 2023.07-rc5-0.0.0-devel+git.580eb31199be (Jun 27 2023 - 13:39:58 +0000)
CPU:   Freescale i.MX7S rev1.2 800 MHz (running at 792 MHz)
CPU:   Extended Commercial temperature grade (-20C to 105C) at 30C
Reset cause: POR
DRAM:  initcall sequence 8786eafc failed at call 8781b351 (err=-3)
### ERROR ### Please RESET the board ###
```

Currently at the EOSS in Prague, so no way to do more testing/debugging, but I
tought it was better to start reporting this on the list since we are getting
close to the actual release.

Francesco