Add forgotten ebbr.config file

This tool won't work without the extra config file

Signed-off-by: Grant Likely <grant.likely@arm.com>

ebbr.config

+CONFIG_BOOTM_EFI=y
+CONFIG_CMD_BOOTEFI=y
+CONFIG_CMD_BOOTEFI_HELLO_COMPILE=y
+CONFIG_CMD_BOOTEFI_HELLO=y
+CONFIG_CMD_BOOTEFI_SELFTEST=y
+CONFIG_CMD_NVEDIT_EFI=y
+CONFIG_CMD_EFIDEBUG=y
+CONFIG_CMD_GPT=y
+CONFIG_EFI_PARTITION=y
+CONFIG_EFI_LOADER=y
+CONFIG_EFI_VARIABLE_FILE_STORE=y
+CONFIG_EFI_DEVICE_PATH_TO_TEXT=y
+CONFIG_EFI_LOADER_HII=y
+CONFIG_EFI_UNICODE_COLLATION_PROTOCOL2=y
+CONFIG_EFI_UNICODE_CAPITALIZATION=y
+CONFIG_EFI_HAVE_RUNTIME_RESET=y
+
+# Enable the get/set time runtime service
+CONFIG_DM_RTC=y
+CONFIG_EFI_GET_TIME=y
+CONFIG_EFI_SET_TIME=y