perf: Update documentation for new python callbacks

Document perf_brstack_srcline and perf_ip_srcline.

Signed-off-by: Andi Kleen <ak@linux.intel.com>

tools/perf/Documentation/perf-script-python.txt

diff --git a/tools/perf/Documentation/perf-script-python.txt b/tools/perf/Documentation/perf-script-python.txt
index 13e37e9..8afa8618 100644
--- a/tools/perf/Documentation/perf-script-python.txt
+++ b/tools/perf/Documentation/perf-script-python.txt
@@ -624,6 +624,9 @@
  perf_set_itrace_options(context, itrace_options) - set --itrace options if they have not been set already
  perf_sample_srcline(context) - returns source_file_name, line_number
  perf_sample_srccode(context) - returns source_file_name, line_number, source_line
+ perf_brstack_srcline(context, brstack) - returns source_file_name, line_number, discriminator, executable, build-id, inline-stack for each entry of a brstack from the sample. Inline stack is a list of inlines with filename, line number, discriminator, symbolname for each entry.
+ perf_ip_srcline(context, ip) - returns source_file_name, line_number, discriminator, executable, build-id, inline-stack for a numerical IP address.
+
 
 
 Util.py Module