COMPMID-765: Added missing <errno.h> include

Change-Id: I25424481ddbbeb43f940cf51cef791e4fd83ea92
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/117676
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
1 file changed