[][kernel][common][Refactor rtq6056 backport patch path]

[Description]
Refactor rtq6056 backport patch path from backport-5.4 to patch-5.4.
Rename patch w/ internal backport naming rule 999-1xxx-v[0-9].[0-9].

[Release-log]
N/A

Change-Id: Iffa94b2ab4352184c74a7675cf64298deb648186
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8288141
diff --git a/target/linux/generic/backport-5.4/999-2210-v6.1-iio-adc-add-rtq6056-support.patch b/target/linux/mediatek/patches-5.4/999-1801-v6.1-iio-adc-add-rtq6056-support.patch
similarity index 100%
rename from target/linux/generic/backport-5.4/999-2210-v6.1-iio-adc-add-rtq6056-support.patch
rename to target/linux/mediatek/patches-5.4/999-1801-v6.1-iio-adc-add-rtq6056-support.patch