davinci: Move emac platform_data to SoC-specific files

Since most of the emac platform_data is really SoC specific
and not board specific, move it to the SoC-specific files.
Put a pointer to the platform_data in the soc_info structure
so the board-specific code can set some of the platform_data
if it needs to.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/include/mach/dm644x.h

@@ -34,6 +34,5 @@
 #define DM644X_EMAC_CNTRL_RAM_SIZE	(0x2000)
 
 void __init dm644x_init(void);
-void dm644x_init_emac(struct emac_platform_data *pdata);
 
 #endif /* __ASM_ARCH_DM644X_H */