ddr: imx: Handle 3734 in addition to 3733 and 3732 MTps rates

The new MX8M DDR tool 3.31 now generates a programming file which uses
data rate 3734 instead of 3733 or 3732 . Handle another rounding option .

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

drivers/ddr/imx/phy/ddrphy_utils.c

@@ -111,6 +111,7 @@ void ddrphy_init_set_dfi_clk(unsigned int drate)
 		dram_pll_init(MHZ(1000));
 		dram_disable_bypass();
 		break;
+	case 3734:
 	case 3733:
 	case 3732:
 		dram_pll_init(MHZ(933));