arch: Enable virtio-rtc configs for x86,arm64

The virtio-rtc driver is available in 6.16. Enable it to support
an emulated PTP device.

Required:
CONFIG_PTP_1588_CLOCK=y, CONFIG_VIRTIO_RTC=y, CONFIG_VIRTIO_RTC_PTP=y

Author: Camelron

arch/arm64/configs/ch_defconfig

@@ -2355,7 +2355,7 @@ CONFIG_VIRTIO_INPUT=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
 # CONFIG_VIRTIO_DEBUG is not set
-# CONFIG_VIRTIO_RTC is not set
+CONFIG_VIRTIO_RTC=y
 # CONFIG_VDPA is not set
 CONFIG_VHOST_MENU=y
 # CONFIG_VHOST_NET is not set
@@ -3512,3 +3512,5 @@ CONFIG_ARCH_USE_MEMTEST=y
 # end of Kernel hacking
 
 CONFIG_IO_URING_ZCRX=y
+CONFIG_VIRTIO_RTC_PTP=y
+CONFIG_VIRTIO_RTC_ARM=y

arch/x86/configs/ch_defconfig

@@ -2365,7 +2365,7 @@ CONFIG_VIRTIO_INPUT=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
 # CONFIG_VIRTIO_DEBUG is not set
-# CONFIG_VIRTIO_RTC is not set
+CONFIG_VIRTIO_RTC=y
 # CONFIG_VDPA is not set
 CONFIG_VHOST_TASK=y
 # CONFIG_VHOST_MENU is not set
@@ -3446,3 +3446,4 @@ CONFIG_ARCH_USE_MEMTEST=y
 # end of Kernel hacking
 
 CONFIG_IO_URING_ZCRX=y
+CONFIG_VIRTIO_RTC_PTP=y