arm: capricorn: Convert CONFIG_BOOTCOUNT_ENV et al to Kconfig

This converts the following to Kconfig:
   CONFIG_BOOTCOUNT_ENV
   CONFIG_BOOTCOUNT_LIMIT

Cc: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/giedi_defconfig b/configs/giedi_defconfig
index 5dd3422..dfac924 100644
--- a/configs/giedi_defconfig
+++ b/configs/giedi_defconfig
@@ -62,6 +62,8 @@
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_SPL_DM=y
+CONFIG_BOOTCOUNT_LIMIT=y
+CONFIG_BOOTCOUNT_ENV=y
 CONFIG_SPL_CLK=y
 CONFIG_CLK_IMX8=y
 CONFIG_CPU=y