kselftest/alsa: Don't any configuration in the sample config

The values in the one example configuration file we currently have are the
default values for the two tests we have so there's no need to actually set
them. Comment them out as examples, with a rename for the tests so that we
can update the tests in the code more easily.

Signed-off-by: Mark Brown <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Takashi Iwai <[e-mail]>

tools/testing/selftests/alsa/conf.d/Lenovo_ThinkPad_P1_Gen2.conf

···
 	#
 	pcm.0.0 {
 		PLAYBACK {
-			test.time1 {
-				access RW_INTERLEAVED	# can be omitted - default
-				format S16_LE		# can be omitted - default
-				rate 48000		# can be omitted - default
-				channels 2		# can be omitted - default
-				period_size 512
-				buffer_size 4096
-			}
-			test.time2 {
-				access RW_INTERLEAVED
-				format S16_LE
-				rate 48000
-				channels 2
-				period_size 24000
-				buffer_size 192000
-			}
+			#
+			# Uncomment to override values for specific tests
+			#
+			#test_name1 {
+			#	access RW_INTERLEAVED
+			#	format S16_LE
+			#	rate 48000
+			#	channels 2
+			#	period_size 512
+			#	buffer_size 4096
+			#}
+			#test_name2 {
+			#	access RW_INTERLEAVED
+			#	format S16_LE
+			#	rate 48000
+			#	channels 2
+			#	period_size 24000
+			#	buffer_size 192000
+			#}
 		}
 		CAPTURE {
 			# use default tests, check for the presence