SystemInformation: sum up all caches found in /proc/cpuinfo
SystemInformation: sum up all caches found in /proc/cpuinfo

Non-x86 architectures (namely PA-RISC) may not have the "cache size" line, but
others. Search for all and sum up their results.

Change-Id: Ie8e1c52e2b8be69b0b919bb029c1db95c04a9309

chuckatkins/KWSys,chuckatkins/KWSys,chuckatkins/KWSys,chuckatkins/KWSys