ARM: configs: at91: sama7: add sama7 USB PHY

On SAMA7 SoCs, USB Host and Device need a USB PHY driver in
order to work. Enable this driver as built in.

Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>

Author: cristibirsan

arch/arm/configs/sama7_defconfig

@@ -241,6 +241,7 @@ CONFIG_AT91_SAMA5D2_ADC=y
 CONFIG_PAC1934=m
 CONFIG_PWM=y
 CONFIG_PWM_ATMEL=y
+CONFIG_PHY_MICROCHIP_SAMA7_USB=y
 CONFIG_MCHP_EIC=y
 CONFIG_RESET_CONTROLLER=y
 CONFIG_NVMEM_MICROCHIP_OTPC=y