ARM: configs: at91: add eic

Add eic.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20220228122326.1400954-3-claudiu.beznea@microchip.com

arch/arm/configs/sama7_defconfig

@@ -190,6 +190,7 @@ CONFIG_IIO_SW_TRIGGER=y
 CONFIG_AT91_SAMA5D2_ADC=y
 CONFIG_PWM=y
 CONFIG_PWM_ATMEL=y
+CONFIG_MCHP_EIC=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 CONFIG_FANOTIFY=y