powerpc/lib: Don't use __put_user_asm_goto() outside of uaccess.h

__put_user_asm_goto() is internal to uaccess.h

Use __put_kernel_nofault() instead. The generated code is identical.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/3e32c4f0361933909368b68f5ee569e5de661c1b.1615398498.git.christophe.leroy@csgroup.eu