Add macro for RV core custom clock gating module

docs/CaliptraIntegrationSpecification.md

@@ -67,6 +67,8 @@ The following table describes integration parameters.
 | CALIPTRA_INTERNAL_QSPI  | config_defines.svh | Defining this enables the internal QSPI.        |
 | USER_ICG                | config_defines.svh | If added by an integrator, provides the name of the custom clock gating module that will be used in [clk_gate.sv](../src/libs/rtl/clk_gate.sv). This substitution is only performed if integrators also define TECH_SPECIFIC_ICG. |
 | TECH_SPECIFIC_ICG       | config_defines.svh | Defining this causes the custom, integrator-defined clock gate module (indicated by the macro USER_ICG) to be used in place of the native Caliptra clock gate module. |
+| USER_EC_RV_ICG          | config_defines.svh | If added by an integrator, provides the name of the custom clock gating module that will be used in the RISC-V core. This replaces the clock gating module TEC_RV_ICG defined in [beh_lib.sv](../src/riscv_core/veer_el2/rtl/lib/beh_lib.sv). This substitution is only performed if integrators also define TECH_SPECIFIC_EC_RV_ICG. |
+| TECH_SPECIFIC_EC_RV_ICG | config_defines.svh | Defining this causes the custom, integrator-defined clock gate module (indicated by the macro USER_EC_RV_ICG) to be used in place of the native RISC-V core clock gate module. |
 
 ## Interface
 
@@ -666,7 +668,7 @@ Several files contain code that may be specific to an integrator's implementatio
 | [config_defines.svh](../src/integration/rtl/config_defines.svh)                        | Enable Caliptra internal TRNG (if applicable).<br>Declare name of custom clock gate module by defining USER_ICG.<br>Enable custom clock gate by defining TECH_SPECIFIC_ICG.                |
 | [soc_ifc_pkg.sv](../src/soc_ifc/rtl/soc_ifc_pkg.sv)                                    | Define PAUSER default behavior and (if applicable) override values. See [Integration Parameters](#integration-parameters). |
 | [caliptra_icg.sv](../src/libs/rtl/caliptra_icg.sv)                                     | Replace with technology-specific clock gater.<br>Modifying this file is not necessary if integrators override the clock gate module that is used by setting TECH_SPECIFIC_ICG. |
-| [beh_lib.sv](../src/riscv_core/veer_el2/rtl/lib/beh_lib.sv)                            | Replace rvclkhdr/rvoclkhdr with technology-specific clock gater.       |
+| [beh_lib.sv](../src/riscv_core/veer_el2/rtl/lib/beh_lib.sv)                            | Replace rvclkhdr/rvoclkhdr with technology-specific clock gater.<br>Modifying this file may not be necessary if integrators override the clock gate module that is used by setting TECH_SPECIFIC_EC_RV_ICG. |
 | [caliptra_prim_flop_2sync.sv](../src/caliptra_prim/rtl/caliptra_prim_flop_2sync.sv)    | Replace with technology-specific sync cell.                            |
 | [caliptra_2ff_sync.sv](../src/libs/rtl/caliptra_2ff_sync.sv)                           | Replace with technology-specific sync cell.                            |
 | [dmi_jtag_to_core_sync.v](../src/riscv_core/veer_el2/rtl/dmi/dmi_jtag_to_core_sync.v)  | Replace with technology-specific sync cell.                            |