OMAP2+: sdrc: fix compile break on OMAP4-only config on current omap-for-linus
OMAP2+: sdrc: fix compile break on OMAP4-only config on current omap-for-linus

On non-OMAP2 and non-OMAP3 kernel configs, turn omap2_sdrc_init() into
a no-op.  Otherwise, compilation breaks on an OMAP4-only config with
the current omap-for-linus branch:

arch/arm/mach-omap2/built-in.o: In function `omap2_init_common_devices':
../mach-omap2/io.c:421: undefined reference to `omap2_sdrc_init'

Thanks to Sergei Shtylyov <38a867ea26f35d3eeb42270f1bc7b9d1d135e6a2@mvista.com> for suggesting the use
of a empty static inline function rather than a macro.

Signed-off-by: Paul Walmsley <a027184a55211cd23e3f3094f1fdc728df5e0500@pwsan.com>
Cc: Tony Lindgren <1001e8702733cced254345e193c88aaa47a4f5de@atomide.com>
Cc: Sergei Shtylyov <38a867ea26f35d3eeb42270f1bc7b9d1d135e6a2@mvista.com>
[1001e8702733cced254345e193c88aaa47a4f5de@atomide.com: updated not to use __init for inline omap2_sdrc_init]
Signed-off-by: Tony Lindgren <1001e8702733cced254345e193c88aaa47a4f5de@atomide.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas