[rocm7.1_internal_testing_inductor][ROCm][inductor] Additional pointwise tunings

[naromero77amd]

This config improves the performance of a 1D pointwise kernel by 20% as measured on MI350.

(cherry picked from commit a7bac0a)

Duplicate of this #2642

[naromero77amd]

I would have normally autogenerated this PR, but the cherry-picking PR bot is not working.

[rocm-repo-management-api]

Jenkins build for 4af07e333261b7fbbdb2cfc6089d506eb2b0a1ba commit finished as FAILURE
Links: Blue Ocean view / Build artifacts

Detected error during base docker image building:

#30 [stage-0 22/56] COPY ./common/install_rocm_magma.sh install_rocm_magma.sh
#30 DONE 0.0s

#31 [stage-0 23/56] RUN bash ./install_rocm_magma.sh
#31 0.570 ./install_rocm_magma.sh: line 91: syntax error: unexpected end of file
#31 ERROR: process "/bin/sh -c bash ./install_rocm_magma.sh" did not complete successfully: exit code: 2
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 > [stage-0 23/56] RUN bash ./install_rocm_magma.sh:
0.570 ./install_rocm_magma.sh: line 91: syntax error: unexpected end of file
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