efi: libstub: Move screen_info handling to common code

JIRA: https://issues.redhat.com/browse/RHEL-60834

commit 732ea9d
Author: Ard Biesheuvel <ardb@kernel.org>
Date:   Tue Oct 11 17:10:39 2022 +0200

    efi: libstub: Move screen_info handling to common code

    Currently, arm64, RISC-V and LoongArch rely on the fact that struct
    screen_info can be accessed directly, due to the fact that the EFI stub
    and the core kernel are part of the same image. This will change after a
    future patch, so let's ensure that the screen_info handling is able to
    deal with this, by adopting the arm32 approach of passing it as a
    configuration table. While at it, switch to ACPI reclaim memory to hold
    the screen_info data, which is more appropriate for this kind of
    allocation.

    Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

RHEL: Downstream only: this commit returns a small chunk of the above commit,
which was accidetally removed by commit 5b63e80

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>

Author: Maxim Levitsky

drivers/firmware/efi/efi.c

@@ -606,6 +606,9 @@ static const efi_config_table_type_t common_tables[] __initconst = {
 #endif
 #ifdef CONFIG_UNACCEPTED_MEMORY
 	{LINUX_EFI_UNACCEPTED_MEM_TABLE_GUID,	&efi.unaccepted,	"Unaccepted"	},
+#endif
+#ifdef CONFIG_EFI_GENERIC_STUB
+	{LINUX_EFI_SCREEN_INFO_TABLE_GUID,	&screen_info_table			},
 #endif
 	{},
 };