Pull EFI fixes from Ingo Molnar:
"A handful of EFI fixes:
- Fix/robustify a diagnostic printk
- Fix a (normally not triggered) parser bug in the libstub code
- Allow !EFI_MEMORY_XP && !EFI_MEMORY_RO entries in the memory map
- Stop RISC-V from crashing on boot if there's no FDT table"
* tag 'efi-urgent-2021-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: cper: fix snprintf() use in cper_dimm_err_location()
efi/libstub: prevent read overflow in find_file_option()
efi: Allow EFI_MEMORY_XP and EFI_MEMORY_RO both to be cleared
efi/fdt: fix panic when no valid fdt found