Convert CONFIG_BOOTCOUNT_RAM to Kconfig

This converts the following to Kconfig:
  CONFIG_BOOTCOUNT_RAM

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
diff --git a/configs/theadorable_debug_defconfig b/configs/theadorable_debug_defconfig
index aa6e5e1..918447a 100644
--- a/configs/theadorable_debug_defconfig
+++ b/configs/theadorable_debug_defconfig
@@ -45,6 +45,7 @@
 CONFIG_SPL_OF_TRANSLATE=y
 CONFIG_SATA_MV=y
 CONFIG_BOOTCOUNT_LIMIT=y
+CONFIG_BOOTCOUNT_RAM=y
 CONFIG_FPGA_ALTERA=y
 CONFIG_DM_GPIO=y
 # CONFIG_MMC is not set