dt-bindings: serial: pl011: Delete an incorrect compatible string

dt-bindings: serial: pl011: Delete an incorrect compatible string

The compatible strings "zte,zx296702-uart" and "arm,primecell" are a
combination, but commit 89d4f98ae90d ("ARM: remove zte zx platform")
removes only the former. It is incorrect to match driver pl011 based only
on the remaining "arm,primecell". Delete it.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
 Documentation/devicetree/bindings/serial/pl011.yaml | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

Link: https://lore.kernel.org/r/20210520115440.8259-2-thunder.leizhen@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>