1) Finish eliminating all uses of EFI_CALL() used in the tree, allowing for the

1) Finish eliminating all uses of EFI_CALL() used in the tree, allowing for the
removal of eficall.h files.

2) Allow booting from 4k-byte sector devices.

3) Don't leak memory after successfull i/o.

The end result is that riscv64 efidev.c and efipxe.c are identical to the
arm64/armv7 versions, efirng.c is identical to the amd64/arm64 versions and
efiboot.c has only the arm64 -> riscv64 changes.

ok kettenis@