intel: ipu3: Rename imgu subdev

Rename imgu subdev from 'imgu:0' to
'imgu'

BUG=b:62358788
TEST=Basic camera functions work on soraka
CQ-DEPEND=CL:780043

Change-Id: Id9e1b470d5f184ab6374fa2c4523013835eb1e99
Signed-off-by: caoxi <xi.cao@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/776402
Commit-Ready: WeiX Meng <weix.meng@intel.com>
Tested-by: WeiX Meng <weix.meng@intel.com>
Reviewed-by: Ricky Liang <jcliang@chromium.org>
diff --git a/hal/intel/psl/ipu3/GraphConfig.cpp b/hal/intel/psl/ipu3/GraphConfig.cpp
index fb90890..24a8008 100644
--- a/hal/intel/psl/ipu3/GraphConfig.cpp
+++ b/hal/intel/psl/ipu3/GraphConfig.cpp
@@ -2217,7 +2217,7 @@
     Node *imgu = nullptr;
     int width = 0, height = 0, format = 0;
     int enabled = 1;
-    std::string kImguName = "ipu3-imgu:0";
+    std::string kImguName = "ipu3-imgu";
 
     ret = mSettings->getDescendant(GCSS_KEY_IMGU, &imgu);
     if (ret != css_err_none) {
diff --git a/hal/intel/psl/ipu3/MediaCtlHelper.cpp b/hal/intel/psl/ipu3/MediaCtlHelper.cpp
index f7a6f27..f298125 100644
--- a/hal/intel/psl/ipu3/MediaCtlHelper.cpp
+++ b/hal/intel/psl/ipu3/MediaCtlHelper.cpp
@@ -23,7 +23,7 @@
 
 const char* STATISTICS = "3a statistics";
 const char* PARAMS = "parameters";
-const char* IMGU_NAME = "ipu3-imgu:0";
+const char* IMGU_NAME = "ipu3-imgu";
 
 namespace android {
 namespace camera2 {