libc: Fix struct user_vfp definition.

This patch moves the definition of struct user_vfp from <asm/ptrace.h>
to <asm/user.h> for the ARM platform, in order to match the original
kernel headers.

See patches  94519 and 94520 for a description of the problem and a
fix for debuggerd that uses the structure.

This prevented us from properly re-running the kernel headers cleanup
scripts.

Change-Id: I43718a59ae49b9d89fc2d1c8affb65973fb2919c
2 files changed