zynq: rename patches directory

Rename patches directory to be kernel-specific.

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>

diff --git a/target/linux/zynq/patches/0001-dts-add-antminer-s9.patch b/target/linux/zynq/patches-6.18/0001-dts-add-antminer-s9.patch
similarity index 100%
rename from target/linux/zynq/patches/0001-dts-add-antminer-s9.patch
rename to target/linux/zynq/patches-6.18/0001-dts-add-antminer-s9.patch

diff --git a/target/linux/zynq/patches/0002-dts-antminer-s9-led-aliases.patch b/target/linux/zynq/patches-6.18/0002-dts-antminer-s9-led-aliases.patch
similarity index 100%
rename from target/linux/zynq/patches/0002-dts-antminer-s9-led-aliases.patch
rename to target/linux/zynq/patches-6.18/0002-dts-antminer-s9-led-aliases.patch