busybox: Add use flag for using utc in busybox-hwclock
busybox: Add use flag for using utc in busybox-hwclock

Use flag added: busybox_hwclock_utc
Is not set by default, meaning UTC is by default not used. If set, enables
use of UTC in busybox-hwclock

Signed-off-by: Christian Sørensen <b4440a0607dba251e627cc55267a9b2ddd672a8a@prevas.dk>

sknsean/base,sknsean/base,sknsean/base,moths/base,esben/base,hundeboll/base,esben/base,sknsean/base,moths/base,esben/base,oe-lite/base,hundeboll/base,moths/base,hundeboll/base,esben/base,kimrhh/base,moths/base,hundeboll/base,oe-lite/base,hundeboll/base,kimrhh/base,moths/base,oe-lite/base,sknsean/base,hundeboll/base,moths/base,sknsean/base,kimrhh/base,oe-lite/base,oe-lite/base,esben/base,kimrhh/base,esben/base,kimrhh/base,oe-lite/base,kimrhh/base