dts; Reduce Prime core power coefficient for better utilization

The default dynamic-power-coefficient for the Prime Core (Cortex-X1)
is set too high (0x2f5), causing the Energy Aware Scheduler (EAS) to
avoid placing tasks on it to save power.

This results in the X1 core being underutilized even during heavy workloads,
causing performance regressions compared to the A78 cluster.

Lower the coefficient to 0x240 to "trick" EAS into migrating tasks
to the Prime core earlier, improving single-thread performance and responsiveness.

Author: elitetest1

arch/arm64/boot/dts/exynos/exynos2100.dts

@@ -13874,7 +13874,7 @@
 			compatible = "arm,hera", "arm,armv8";
 			reg = <0x00 0x700>;
 			capacity-dmips-mhz = <0x3e5>;
-			dynamic-power-coefficient = <0x2f5>;
+			dynamic-power-coefficient = <0x240>;
 			enable-method = "psci";
 			cpu-idle-states = <0x108>;
 			sched-energy-data = <0x109>;