ARM: OMAP4: hwmod data: add EMIF1 and 2

Add the EMIF1 and 2 hwmods and associated interconnect data.  The EMIFs
are SDRAM interface IP blocks.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Benoît Cousson <b-cousson@ti.com>