Architectures of mips64_mips64r2 and mips64el_mips64r2 sdk images are wrong

[moetayuko]

❯ docker run --pull=always --rm -it ghcr.io/openwrt/sdk:mips64_mips64r2-main /bin/bash 
mips64_mips64r2-main: Pulling from openwrt/sdk
3d53ef4019fc: Already exists 
687d5266f2f5: Already exists 
89b1a91976d4: Already exists 
a0db73333241: Already exists 
e8357464ca90: Already exists 
1176c1218a92: Already exists 
1f95f8766af4: Already exists 
4f4fb700ef54: Already exists 
1d67a63034e3: Pull complete 
Digest: sha256:585df1089c04d4419eaa1fd57785bb0d880fb41d4f0386112d091ca33e620719
Status: Downloaded newer image for ghcr.io/openwrt/sdk:mips64_mips64r2-main
buildbot@ce2c6fb2056f:~$ ls build_dir/
target-mips_24kc_musl

❯ docker run --pull=always --rm -it ghcr.io/openwrt/sdk:mips64el_mips64r2-main /bin/bash                                       
mips64el_mips64r2-main: Pulling from openwrt/sdk
3d53ef4019fc: Already exists 
687d5266f2f5: Already exists 
89b1a91976d4: Already exists 
a0db73333241: Already exists 
e8357464ca90: Already exists 
1176c1218a92: Already exists 
1f95f8766af4: Already exists 
4f4fb700ef54: Already exists 
e871f3f84ad5: Pull complete 
Digest: sha256:7178f5bf63e82a7dca27823fcc31ebd2de617e6d52db3985208042dfbf26952b
Status: Downloaded newer image for ghcr.io/openwrt/sdk:mips64el_mips64r2-main
buildbot@21c67dc65781:~$ ls build_dir/
target-mipsel_24kc_musl