Enable 12 channel decoding of raw audio format

Bug: 239888700
Test: atest CtsMediaV2TestCases:CodecDecoderValidationTest

Change-Id: Iffc43f20e30049450b2c71363970e6f9e2970333
diff --git a/media/codec2/components/raw/C2SoftRawDec.cpp b/media/codec2/components/raw/C2SoftRawDec.cpp
index a03d4e2..ea13071 100644
--- a/media/codec2/components/raw/C2SoftRawDec.cpp
+++ b/media/codec2/components/raw/C2SoftRawDec.cpp
@@ -65,7 +65,7 @@
         addParameter(
                 DefineParam(mChannelCount, C2_PARAMKEY_CHANNEL_COUNT)
                 .withDefault(new C2StreamChannelCountInfo::output(0u, 2))
-                .withFields({C2F(mChannelCount, value).inRange(1, 8)})
+                .withFields({C2F(mChannelCount, value).inRange(1, 12)})
                 .withSetter(Setter<decltype(*mChannelCount)>::StrictValueWithNoDeps)
                 .build());