linux-imx

powerpc/code-patching: Add a helper to get the address of a patch_site

This patch adds a helper to get the address of a patch_site.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Call it "patch site" addr]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>