ARM: imx: fix imx_init_l2cache storage class
ARM: imx: fix imx_init_l2cache storage class

This fixes the following compilation error:

  arch/arm/mach-imx/system.c:101:123: error: static declaration of ‘imx_init_l2cache’ follows non-static declaration
  In file included from arch/arm/mach-imx/system.c:32:0:
  arch/arm/mach-imx/common.h:165:13: note: previous declaration of ‘imx_init_l2cache’ was here
  arch/arm/mach-imx/system.c:101:123: warning: ‘imx_init_l2cache’ defined but not used [-Wunused-function]

Signed-off-by: Vincent Stehlé <54d054b96e74e554ed4c5f2244963ef0a98f708f@freescale.com>
Cc: Sascha Hauer <c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b@pengutronix.de>
Cc: Russell King <ba324ca7b1c77fc20bb970d5aff6eea9377918a5@arm.linux.org.uk>
Signed-off-by: Shawn Guo <912cf7eb7d8018e2943586ae6657d21fd4e38239@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs