hexagon: Use generic time config

config GENERIC_TIME not longer used.

Signed-off-by: Anna-Maria Gleixner <anna-maria@glx-um.de>
Cc: Richard Kuo <rkuo@codeaurora.org>
Link: http://lkml.kernel.org/r/20120518163105.416570309@glx-um.de


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>