dt-bindings: clock: qca,ath79-pll: fix copy-paste typos

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12869/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>