PM: tools: Fix sleepgraph syntax error

The sleepgraph tool currently fails:

File "/usr/bin/sleepgraph", line 4155
or re.match('psci: CPU(?P<cpu>[0-9]*) killed.*', msg)):
^
SyntaxError: unmatched ')'

Fixes: 34ea427e01ea ("PM: tools: sleepgraph: Recognize "CPU killed" messages")
Signed-off-by: David Woodhouse <[e-mail]>
Reviewed-by: Wolfram Sang <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

tools/power/pm-graph/sleepgraph.py

···
 			elif(re.match('Enabling non-boot CPUs .*', msg)):
 				# start of first cpu resume
 				cpu_start = ktime
-			elif(re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)) \
+			elif(re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg) \
 				or re.match('psci: CPU(?P<cpu>[0-9]*) killed.*', msg)):
 				# end of a cpu suspend, start of the next
 				m = re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)