rocm.Dockerfile: added gfx1200,gfx1201 architectures to support AMD Radeon RX 9000 series (ggml-org#15994)

* rocm.Dockerfile: added gfx1200,gfx1201 architectures to support  AMD Radeon RX 9000 series

https://rocm.docs.amd.com/projects/install-on-linux/en/docs-6.4.1/reference/system-requirements.html#rdna-os
states the Radeon RX 9000 series is supported support from Ubuntu 24.04.2, and the dockerfile is using 24.04 which is ROCm 6.4.

This fixed the `ROCm error: invalid device function` I was getting when trying to use the rocm container.

Author: channeladam

.devops/rocm.Dockerfile

@@ -4,7 +4,7 @@ ARG UBUNTU_VERSION=24.04
 ARG ROCM_VERSION=6.4
 ARG AMDGPU_VERSION=6.4
 
-# Target the CUDA build image
+# Target the ROCm build image
 ARG BASE_ROCM_DEV_CONTAINER=rocm/dev-ubuntu-${UBUNTU_VERSION}:${ROCM_VERSION}-complete
 
 ### Build image
@@ -15,12 +15,12 @@ FROM ${BASE_ROCM_DEV_CONTAINER} AS build
 # This is mostly tied to rocBLAS supported archs.
 # gfx803, gfx900, gfx1032, gfx1101, gfx1102,not officialy supported
 # gfx906 is deprecated
-#check https://rocm.docs.amd.com/projects/install-on-linux/en/docs-6.2.4/reference/system-requirements.html
+#check https://rocm.docs.amd.com/projects/install-on-linux/en/docs-6.4.1/reference/system-requirements.html
 
-ARG ROCM_DOCKER_ARCH='gfx803,gfx900,gfx906,gfx908,gfx90a,gfx942,gfx1010,gfx1030,gfx1032,gfx1100,gfx1101,gfx1102'
+ARG ROCM_DOCKER_ARCH='gfx803,gfx900,gfx906,gfx908,gfx90a,gfx942,gfx1010,gfx1030,gfx1032,gfx1100,gfx1101,gfx1102,gfx1200,gfx1201'
 #ARG ROCM_DOCKER_ARCH=gfx1100
 
-# Set nvcc architectured
+# Set ROCm architectured
 ENV AMDGPU_TARGETS=${ROCM_DOCKER_ARCH}
 # Enable ROCm
 # ENV CC=/opt/rocm/llvm/bin/clang