toosl-ma: fix syscall regex to pass as hint
toosl-ma: fix syscall regex to pass as hint

As it was formally implemented, the range of files selected for sycalls
lookup was too broad, and an improvement in the hint regular expression
can be benefitial to reduce this scope.

Change-Id: I1c08c5c7c83c7e3a5d3ed235d3fd6a4f764481b5
Signed-off-by: Daniel Kreling <9de9c78356328cdcb82113a6ca86c8f74adbadc3@br.ibm.com>

open-power-sdk/migration-advisor,open-power-sdk/migration-advisor,open-power-sdk/migration-advisor,open-power-sdk/migration-advisor