perf annotate browser: Rename struct browser_disasm_line to browser_line

perf annotate browser: Rename struct browser_disasm_line to browser_line

Rename struct browser_disasm_line to browser_line, because the browser
operates now on generic lines and no longer on disasm lines.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20171106105536.GA20858@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>