ARM: omap5/dra7xx: Fix frequency typos

The switch statement of the possible list of SYSCLK1 frequencies is
missing a 0 in 4 out of the 7 frequencies.

Fixes: fa6d79d2

 ("ARM: OMAP: Add initialisation for the real-time counter")
Cc: stable@vger.kernel.org # v3.7+
Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>