Pull arm64 fix from Catalin Marinas:
"Fix buffer overflow when UTF-16 UEFI vendor string is copied from the
system table into a char array with a size of 100 bytes"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/efi: map the entire UEFI vendor string before reading it