soc: qcom: pd-mapper: Fix element length in servreg_loc_pfr_req_ei

soc: qcom: pd-mapper: Fix element length in servreg_loc_pfr_req_ei

It looks element length declared in servreg_loc_pfr_req_ei for reason
not matching servreg_loc_pfr_req's reason field due which we could
observe decoding error on PD crash.

  qmi_decode_string_elem: String len 81 >= Max Len 65

Fix this by matching with servreg_loc_pfr_req's reason field.

Fixes: 1ebcde047c54 ("soc: qcom: add pd-mapper implementation")
Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Tested-by: Nikita Travkin <nikita@trvn.ru>
Link: https://lore.kernel.org/r/20260129152320.3658053-2-mukesh.ojha@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>