acer-wmi: Don't warn if mail LED cannot be detected
acer-wmi: Don't warn if mail LED cannot be detected

This warning confuses users, who think it is an error. Not detecting the
mail LED simply means it isn't there, so let's not unduly panic users.

Signed-off-by: Carlos Corbacho <ab5e2bca84933118bbc9d48ffaccce3bac4eeb64@strangeworlds.co.uk>
Signed-off-by: Len Brown <b060cfa1096cc6e8be83699ddb4ed8a77dd63af5@intel.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs