[PATCH] ARM: imx: make imx51/3 suspend optional

[Shawn Guo]

On Thu, May 21, 2015 at 02:06:30PM +0200, Arnd Bergmann wrote:
> A recent change to the imx53 power management caused a build
> regression when CONFIG_SOC_IMX53 is disabled:
> 
> mach-imx/built-in.o:(.init.rodata+0x60): undefined reference to `imx53_suspend'
> mach-imx/built-in.o:(.init.rodata+0x64): undefined reference to `imx53_suspend_sz'
> 
> This avoids the problem by compiling the code in question
> conditionally on the presence of CONFIG_SOC_IMX53. For
> consistency, I'm also changing the same thing for
> CONFIG_SOC_IMX51.
> 
> An additional benefit of this approach is reduced code size
> for kernels that only include support for one of the two
> SoCs.
> 
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> Fixes: 41c1b15afa2c7 ("ARM: imx53: Set DDR pins to high impedance when in suspend to RAM.")
> ---
> Please apply on top of the broken commit

Applied.  Thanks for the fixing, Arnd.

Shawn