dm: Rename DM_GET_DRIVER() to DM_DRIVER_GET()

In the spirit of using the same base name for all of these related macros,
rename this to have the operation at the end. This is not widely used so
the impact is fairly small.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-rockchip/rk3328/clk_rk3328.c b/arch/arm/mach-rockchip/rk3328/clk_rk3328.c
index e537551..70c0eb6 100644
--- a/arch/arm/mach-rockchip/rk3328/clk_rk3328.c
+++ b/arch/arm/mach-rockchip/rk3328/clk_rk3328.c
@@ -12,7 +12,7 @@
 int rockchip_get_clk(struct udevice **devp)
 {
 	return uclass_get_device_by_driver(UCLASS_CLK,
-			DM_GET_DRIVER(rockchip_rk3328_cru), devp);
+			DM_DRIVER_GET(rockchip_rk3328_cru), devp);
 }
 
 void *rockchip_get_cru(void)