Update BSD license for GCC clock ids.

Fixes: 87a3d523 ("dt-bindings: clock: Add SC7280 GCC clock binding")
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lore.kernel.org/r/1626189143-12957-2-git-send-email-tdas@codeaurora.orgAcked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>