media: Remove references to non-existent PLAT_S5P symbol

media: Remove references to non-existent PLAT_S5P symbol

commit 098bcd2335f0824e76dd835e4e2b7ae8e38fc281 upstream.

The PLAT_S5P Kconfig symbol was removed in commit d78c16ccde96
("ARM: SAMSUNG: Remove remaining legacy code"). However, there
are still some references to that symbol left, fix that by
substituting them with ARCH_S5PV210.

Fixes: d78c16ccde96 ("ARM: SAMSUNG: Remove remaining legacy code")
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>