ARM: OMAP4+: emif: Detect SDRAM from SDRAM config register

Now SDRAM initialization is done on the basis of omap revision.
Instead this should be done on basis of SDRAM type read from
EMIF_SDRAM_CONFIG register. This will be helpful to avoid
unnessecary cpu checks for new boards

Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@ti.com>
diff --git a/arch/arm/cpu/armv7/omap5/hwinit.c b/arch/arm/cpu/armv7/omap5/hwinit.c
index d0c3ff7..4def422 100644
--- a/arch/arm/cpu/armv7/omap5/hwinit.c
+++ b/arch/arm/cpu/armv7/omap5/hwinit.c
@@ -191,7 +191,7 @@
 		       (sc_fast << 17) | (sc_fast << 14);
 	writel(io_settings, &(ioregs_base->control_smart3io_padconf_1));
 
-	if (omap_revision() <= OMAP5430_ES1_0)
+	if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2)
 		io_settings_lpddr2();
 	else
 		io_settings_ddr3();