efi: video: fix mode info in payload mode

efi: video: fix mode info in payload mode

Currently, the EFI framebuffer is non-functional in payload mode. It
always reports: "No video mode configured in EFI!"

This is caused by a copy-paste error that replaced
"struct efi_entry_gopmode" with "struct efi_gop_mode".

Fixes: 88753816cf54 ("efi: video: Move payload code into a function")
Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>