interconnect: qcom: msm8974: drop duplicated RPM_BUS_{MASTER,SLAVE}_REQ defines

Both the RPM_BUS_MASTER_REQ and the RPM_BUS_SLAVE_REQ constants are
also defined in the 'icc-rpm.h' header.

$ git grep -nHE 'define[[:blank:]]+RPM_BUS_MASTER_REQ[[:blank:]]'
drivers/interconnect/qcom/icc-rpm.h:16:#define RPM_BUS_MASTER_REQ 0x73616d62
drivers/interconnect/qcom/msm8974.c:176:#define RPM_BUS_MASTER_REQ 0x73616d62

$ git grep -nHE 'define[[:blank:]]+RPM_BUS_SLAVE_REQ[[:blank:]]'
drivers/interconnect/qcom/icc-rpm.h:17:#define RPM_BUS_SLAVE_REQ 0x766c7362
drivers/interconnect/qcom/msm8974.c:177:#define RPM_BUS_SLAVE_REQ 0x766c7362

Drop the local defines to avoid the duplications.

No functional changes intended. Compile tested only.

Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260122-icc-qcom-dupe-defines-v1-2-eea876c2d98f@gmail.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>