soc/intel/alderlake: Enable energy efficiency turbo mode

This patch enables the energy efficiency turbo mode.

Signed-off-by: V Sowmya <v.sowmya@intel.com>
Change-Id: I2d76c948bdc9c208f5728e305b3034fcede6f4bf
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55705
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/alderlake/fsp_params.c

@@ -517,6 +517,8 @@ static void fill_fsps_misc_power_params(FSP_S_CONFIG *s_cfg,
 	s_cfg->Hwp = 1;
 	s_cfg->Cx = 1;
 	s_cfg->PsOnEnable = 1;
+	/* Enable the energy efficient turbo mode */
+	s_cfg->EnergyEfficientTurbo = 1;
 }
 
 static void fill_fsps_irq_params(FSP_S_CONFIG *s_cfg,