bitbake: build: Fix profile file names

Using the basename of the .bb file is not unique, for example xxx-native
and xxx can overwrite each other. If this happens whilst running, you can
get odd backtraces as one file is parsed as another tries to write out
new data.

Avoid issues by using PN for the output filename instead.

(Bitbake rev: c9534f8e59d44b885334607ed90a3be2e492ec69)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/build.py

@@ -467,7 +467,7 @@ def exec_task(fn, task, d, profile = False):
             quieterr = True
 
         if profile: 
-            profname = "profile-%s.log" % (os.path.basename(fn) + "-" + task)
+            profname = "profile-%s.log" % (d.getVar("PN", True) + "-" + task)
             try:
                 import cProfile as profile
             except: