ARM: configs: at91_dt_defconfig: configs for sam9x60

Enable CONFIG_NO_HZ_IDLE and CONFIG_HIGH_RES_TIMERS=y to be used
in conjunction with PIT64B present on SAM9X60.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20210406141152.10706-1-claudiu.beznea@microchip.com

arch/arm/configs/at91_dt_defconfig

 # CONFIG_LOCALVERSION_AUTO is not set
 # CONFIG_SWAP is not set
 CONFIG_SYSVIPC=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y