ARM: omap3: Thumb-2 compatibility for sleep34xx.S

 * Build unconditionally as ARM for correct interoperation with
   OMAP firmware.

 * Fix an out-of-range ADR when building for ARM.

 * Remove deprecated PC-relative stores.

 * Add the required ENDPROC() directive for each ENTRY().

 * .align before data words.

 * Handle non-interworking return from v7_flush_dcache_all.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>