This is to address the regressions addressed by Nic [1].
The regular expression pattern for the tls_ie-01 test was
too strict and raising false alarms. The new pattern only
looks for matches that should be there AND ignores the boiler
plates from the object dump.
[1] New failures for ARC targets in linker testsuite
https://sourceware.org/pipermail/binutils/2020-November/114177.html
ld/
* testsuite/ld-arc/tls_ie-01.d: Use a more general pattern.
