Update README.md

Author: mi-code

README.md

@@ -224,3 +224,4 @@
 | emerald_r-u-oss | Redmi Note 14S | Android U | alps-mp-s0.mp1.tc8sp2-cs1-xm.V1.104_xiaomi.s0mp1.k6789v1.64_P50 |[emerald_r-u-oss](https://github.com/MiCode/Xiaomi_Kernel_OpenSource/tree/emerald_r-u-oss) |
 | xuanyuan-v-oss | Xiaomi 15 Ultra | Android V | release-v-qcom-sm8750-O1 | [xuanyuan-v-oss](https://github.com/MiCode/Xiaomi_Kernel_OpenSource/tree/xuanyuan-v-oss) |
 | dijun-v-oss | Xiaomi 15 SPro / Xiaomi Pad 7 Ultra | Android V | release-v-xring-O1 | [dijun-v-oss](https://github.com/MiCode/Xiaomi_Kernel_OpenSource/tree/dijun-v-oss) |
+| onyx-v-oss | REDMI Turbo 4 Pro | Android V | LA.VENDOR.15.4.0.r1-15000-r1.0.r1_00044.1 |[onyx-v-oss](https://github.com/MiCode/Xiaomi_Kernel_OpenSource/tree/onyx-v-oss) |