[PATCH 4/9] efi/libstub: Add random.c to ARM build

From: Ard Biesheuvel Make random.c build for ARM by moving the fallback definition of EFI_ALLOC_ALIGN to efistub.h, and replacing a division by a value we know to be a power of 2 with a right shift (this is required since ARM does not have any integer division helper

[PATCH 4/9] efi/libstub: Add random.c to ARM build

From: Ard Biesheuvel Make random.c build for ARM by moving the fallback definition of EFI_ALLOC_ALIGN to efistub.h, and replacing a division by a value we know to be a power of 2 with a right shift (this is required since ARM does not have any integer division helper routines in its