I'm now trying to send more smaller PRs - this is the first one that moves us towards being able to assemble all the currently skipped examples from the binutils-esp32ulp test suite (toresolve#49).

The esp32ulp_all.s code has anop; statement in it, and this commit adds support for the; which functions as a statement separator. (See the commit message ofce005e3 for more detail).

Side-note: Currently, due to the way labels are handled/detected, there must be a space between a; and the next statement, if there is another statement on the same line. The way labels are handled is another thing to be fixed (seeesp32ulp_all.s:2, where a statement follows the colon without whitespace), so a future commit may address that issue.

support the ';' line separator character, aka statement separator

ce005e3

binutils-esp32ulp treats the ';' character as a statement separator.Multiple statement separated by this character are treated as ifeach statement was on its own line.Note: Currently, due to the way labels are detected/handled, theremust be a space between a ';' and the next statement, if there isanother statement on the same line.This commit contributes to being able to eventually assemble theesp32ulp_all.s test from binutils-esp32ulp and allows us to dealwith this line:https://github.com/espressif/binutils-esp32ulp/blob/249ec34cc2c9574a86f3f86bbb175a863f988bcf/gas/testsuite/gas/esp32ulp/esp32/esp32ulp_all.s#L108The compat tests show how more than 1 statement on a line would beused/handled.