C2SoftHevcEnc: Do not initialize encoder in onInit()

Like c2 soft avc encoder, defer encoder initialization to process()
This change allows multiple start() and reset() calls.

Test: adb shell /data/local/tmp/vts/VtsHidlC2V1_0TargetComponentTest\
 -C c2.android.hevc.encoder -P /sdcard/media/ -I software
Test: atest android.media.cts.VideoEncoderTest
Bug: 133067331

Change-Id: Ia66206e9cfc008508222900dc498ff3b30e2fb4e
diff --git a/media/codec2/components/hevc/C2SoftHevcEnc.cpp b/media/codec2/components/hevc/C2SoftHevcEnc.cpp
index 0d3357f..9b93cf3 100644
--- a/media/codec2/components/hevc/C2SoftHevcEnc.cpp
+++ b/media/codec2/components/hevc/C2SoftHevcEnc.cpp
@@ -390,27 +390,23 @@
 }
 
 C2SoftHevcEnc::~C2SoftHevcEnc() {
-    releaseEncoder();
+    onRelease();
 }
 
 c2_status_t C2SoftHevcEnc::onInit() {
-    return initEncoder();
+    return C2_OK;
 }
 
 c2_status_t C2SoftHevcEnc::onStop() {
-    if (!mStarted) {
-        return C2_OK;
-    }
-    return releaseEncoder();
+    return C2_OK;
 }
 
 void C2SoftHevcEnc::onReset() {
-    onStop();
-    initEncoder();
+    releaseEncoder();
 }
 
 void C2SoftHevcEnc::onRelease() {
-    onStop();
+    releaseEncoder();
 }
 
 c2_status_t C2SoftHevcEnc::onFlush_sm() {