Failing to enable oneway spam detection is not an error.

We probably shouldn't even print anything, but certainly no error until
this is more widely available.

Bug: 186071136
Test: N/A
Change-Id: I92d91172bd73fbec831234dc0abc6e071032d86f
diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index ca99042..a2efb1c 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -362,7 +362,7 @@
 status_t ProcessState::enableOnewaySpamDetection(bool enable) {
     uint32_t enableDetection = enable ? 1 : 0;
     if (ioctl(mDriverFD, BINDER_ENABLE_ONEWAY_SPAM_DETECTION, &enableDetection) == -1) {
-        ALOGE("Binder ioctl to enable oneway spam detection failed: %s", strerror(errno));
+        ALOGI("Binder ioctl to enable oneway spam detection failed: %s", strerror(errno));
         return -errno;
     }
     return NO_ERROR;
@@ -401,7 +401,7 @@
         uint32_t enable = DEFAULT_ENABLE_ONEWAY_SPAM_DETECTION;
         result = ioctl(fd, BINDER_ENABLE_ONEWAY_SPAM_DETECTION, &enable);
         if (result == -1) {
-            ALOGE("Binder ioctl to enable oneway spam detection failed: %s", strerror(errno));
+            ALOGI("Binder ioctl to enable oneway spam detection failed: %s", strerror(errno));
         }
     } else {
         ALOGW("Opening '%s' failed: %s\n", driver, strerror(errno));