efi_loader: adjust config options for capsule updates

EFI_IGNORE_OSINDICATIONS is used to ignore OsIndications if setvariable
at runtime is not supported and allow the platform to perform capsule
updates on disk. With the recent changes boards can conditionally enable
setvariable at runtime using EFI_RT_VOLATILE_STORE.

Let's make that visible in our Kconfigs and enable EFI_IGNORE_OSINDICATIONS
when set variable at runtime is disabled.

Since EFI_RT_VOLATILE_STORE needs help from the OS to persist the
variables, allow users to ignore OsIndications even if setvariable at
runtime is enabled.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index 38e64af..b49a1fc 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -220,6 +220,7 @@
 config EFI_IGNORE_OSINDICATIONS
 	bool "Ignore OsIndications for CapsuleUpdate on-disk"
 	depends on EFI_CAPSULE_ON_DISK
+	default y if !EFI_RT_VOLATILE_STORE
 	help
 	  There are boards where U-Boot does not support SetVariable at runtime.
 	  Select this option if you want to use the capsule-on-disk feature