hwrng: pasemi_rng.c: Migrate to managed API

[Darren Stevens]

Hello PrasannaKumar

On 25/08/2016, PrasannaKumar Muralidharan wrote:
>> I will propose to use devm_ioremap_resource() instead for removing this
>> hardcoded 0x100, but i cannot find any user of this driver in any dts.
>> (And so cannot check that this 0x100 is given in any DT resource node)
>
>> Is this normal ?
>
> I wanted to use devm_ioremap_resource but could not find DT entry
> required for this driver in any of the .dts files. So did not change
> that. I could not find any dts/dtsi for this platform. So I assume
> that the dtb is not present in the kernel, dtb is supplied by the
> bootloader. I may be wrong in this. Can anyone confirm this?

On mine (Amigaone X1000) that is correct, we boot linux with a vmlinux file,
and the bootloader (CFE) passes a fixed dtb. I think it is possible to dump
the tree from inside CFE, if it would help I can invetigate?

Regards
Darren