[OE-core] [PATCH] fontcache : fix build warning when using quemu usermode

[Alexander Kanavin]

On 12/28/2017 04:21 AM, Jibin Xu wrote:
> fontcache uses quemu usermode by default, but some architecture
> such as Intel skylake does not support qemu usermode, this can
> lead to a build warning as below:
> "WARNING: The postinstall intercept hook 'update_font_cache' failed".
> 
> Add a judgement of qemu usermode to fix the build warning.

You also need to fix this in pixbufcache.bbclass. Squash all changes 
into a single patch.

Alex