ARM: omap3: Thumb-2 compatibility for sram34xx.S

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

 * Remove deprecated PC-relative stores

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

 * .align before data words

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