beaglebone-ai64: i2c errors ooting with u-boot-ti-staging

["Lisandro Damián Nicanor Pérez Meyer" <perezmeyer@gmail.com>]

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Hi, and hope I get the right list for this.

I have built poky's core-image-minimal for the BeagleBone AI64 using meta-ti's kirkstone layer, current HEAD. When I boot I get stuff like:

```
Hit any key to stop autoboot:  2 \b\b\b 1 \b\b\b 0 
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@22: Error reading output register
switch to partitions #0, OK
mmc1 is current device
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@22: Error reading output register
SD/MMC found on device 1
Failed to load 'boot.scr'
Failed to load 'uEnv.txt'
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@20: Error reading output register
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@22: Error reading output register
```
and then I get stuck at 

```
Waiting for root device PARTUUID=18b27b92-02
```

I rebooted, entered u-boot's prompt and run fuinduuid manually, which also causes an I²C-related error:

```
=> run finduuid
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@22: Error reading output register
```

Am I doing something wrong here, or should I be filing a bug somewhere? Of course feel free to ask me for more details.

Thanks in advance, Lisandro.


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