dts: bcm2711: Don't mark timer regs unconfigured

The DT property arm,cpu-registers-not-fw-configured tells the kernel
that the ARM architectural timer has not been configured by the
firmware. This prevents the use of a vDSO - a faster alternative to a
syscall for some common kernel operations.

However, on Pi 4 the firmware does configure the timer, so this property
is unnecessary. Delete it.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>

Author: pelwell

arch/arm/boot/dts/broadcom/bcm2711.dtsi

@@ -451,8 +451,6 @@
 					  IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) |
 					  IRQ_TYPE_LEVEL_LOW)>;
-		/* This only applies to the ARMv7 stub */
-		arm,cpu-registers-not-fw-configured;
 	};
 
 	cpus: cpus {