dbginfo: Added collection of /proc/softirqs
dbginfo: Added collection of /proc/softirqs

Signed-off-by: Sa Liu <88b782ad3e759681af4a25b0a50a3113b52809c2@de.ibm.com>
Signed-off-by: Jan Höppner <96138615ab4af0813785fa10d283f3d37eca3b78@linux.ibm.com>

ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools,ibm-s390-tools/s390-tools