Console: Fix unused result warnings in console driver
Console: Fix unused result warnings in console driver

Fix Wunused-result

Signed-off-by: Ananth N Mavinakayanahalli <7dc108d19a2513f6455353af182b9e4d3b794ec9@in.ibm.com>
Signed-off-by: Vasant Hegde <a6d753843573f7bfed5075c1e875b0be8007a0ab@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

jk-ozlabs/skiboot,legoater/skiboot,stewart-ibm/skiboot,shenki/skiboot,shenki/skiboot,legoater/skiboot,qemu/skiboot,qemu/skiboot,open-power/skiboot,ddstreet/skiboot,jk-ozlabs/skiboot,neelegup/skiboot,cyrilbur-ibm/skiboot,apopple/skiboot,qemu/skiboot,csmart/skiboot,neelegup/skiboot,open-power/skiboot,apopple/skiboot,cyrilbur-ibm/skiboot,shenki/skiboot,ddstreet/skiboot,stewart-ibm/skiboot,mikey/skiboot,stewart-ibm/skiboot,cyrilbur-ibm/skiboot,jk-ozlabs/skiboot,legoater/skiboot,csmart/skiboot,legoater/skiboot,neelegup/skiboot,mikey/skiboot,shenki/skiboot,apopple/skiboot,ddstreet/skiboot,open-power/skiboot,legoater/skiboot,mikey/skiboot,csmart/skiboot,open-power/skiboot,shenki/skiboot,qemu/skiboot,qemu/skiboot,open-power/skiboot