linker: restore timing closure for the service static shell

[amd-vserbu]

The current service-shell static build appears to miss timing after the compute shell work.

Design Timing Summary
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------------------------------------------------------------------------------------------------

    WNS(ns)      TNS(ns)  TNS Failing Endpoints  TNS Total Endpoints      WHS(ns)      THS(ns)  THS Failing Endpoints  THS Total Endpoints     WPWS(ns)     TPWS(ns)  TPWS Failing Endpoints  TPWS Total Endpoints
    -------      -------  ---------------------  -------------------      -------      -------  ---------------------  -------------------     --------     --------  ----------------------  --------------------
     -0.257       -0.257                      1              1810941        0.010        0.000                      0              1807019        0.000        0.000                       0                557854