ToneGenerator: support output sample rates beyond 65535 Hz

Changed type of ToneGenerator::WaveGenerator constructor parameter
samplingRate from unsigned short to uint32_t to permit output
sample rates such as 96000 Hz.

Bug: 33969539
Test: dialer tones work when output sink operates at 96000 Hz
Change-Id: I5551409c467a4fd98ea4d5c9703b120a526a443e
diff --git a/media/libaudioclient/include/ToneGenerator.h b/media/libaudioclient/include/ToneGenerator.h
index 9fd5f61..fc3d3ee 100644
--- a/media/libaudioclient/include/ToneGenerator.h
+++ b/media/libaudioclient/include/ToneGenerator.h
@@ -299,7 +299,7 @@
             WAVEGEN_STOP  // Stop wave on zero crossing
         };
 
-        WaveGenerator(unsigned short samplingRate, unsigned short frequency,
+        WaveGenerator(uint32_t samplingRate, unsigned short frequency,
                 float volume);
         ~WaveGenerator();