kernel:config: Activated PPP in the defconfig for the i.MX6 devices

PPP is required for the SANTVEND to establish a modem connection.

recipes-kernel/linux/linux-seconorth-5.15/seco-mx6/defconfig

@@ -56,7 +56,6 @@ CONFIG_CPU_FREQ=y
 CONFIG_CPU_IDLE=y
 CONFIG_CPU_THERMAL=y
 CONFIG_CRC7=m
-CONFIG_CRC_CCITT=m
 CONFIG_CRC_ITU_T=y
 CONFIG_CRC_T10DIF=y
 CONFIG_CRYPTO_DEV_FSL_CAAM=y
@@ -279,6 +278,15 @@ CONFIG_POWER_RESET_SYSCON_POWEROFF=y
 CONFIG_POWER_RESET_SYSCON=y
 CONFIG_POWER_RESET=y
 CONFIG_POWER_SUPPLY=y
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPP_FILTER=y
+CONFIG_PPP=m
+CONFIG_PPP_MPPE=m
+CONFIG_PPP_MULTILINK=y
+CONFIG_PPPOE=m
+CONFIG_PPP_SYNC_TTY=m
 CONFIG_PREEMPT_VOLUNTARY=y
 CONFIG_PRINTK_TIME=y
 # CONFIG_PRINT_QUOTA_WARNING is not set