CVE-2026-46143 ASoC: qcom: q6apm-lpass-dai: Fix multiple graph opens

In the Linux kernel, the following vulnerability has been resolved: ASoC: qcom: q6apm-lpass-dai: Fix multiple graph opens As prepare can be called mulitple times, this can result in multiple graph opens for playback path. This will result in a memory leaks, fix this by adding a check before openi...