ASoC: ti: j721e-evm: Check for not initialized parent_clk_id

ASoC: ti: j721e-evm: Check for not initialized parent_clk_id

BugLink: https://bugs.launchpad.net/bugs/1942123
[ Upstream commit 82d28b67f780910f816fe1cfb0f676fc38c4cbb3 ]

During probe the parent_clk_id is set to -1 which should not be used to
array index within hsdiv_rates[].

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20210717122820.1467-3-peter.ujfalusi@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>