rockchip: rk3368: pmugrf: add definitions for os_reg[0..3]

On the RK3368 we use a TPL-stage similar to Rockchip's DDR init
(i.e. it initialises DRAM, leaves some info for the next stage and
returns to the BootROM).  To allow compatibility with Rockchip's DDR
init code, we use the same register os_reg2 in pmugrf for passing
this info (i.e. DRAM size and configuration) between stages.

This change adds the definitions for os_reg[0] through os_reg[3] to
the pmugrf structure for the RK3368.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/arm/include/asm/arch-rockchip/grf_rk3368.h

@@ -92,10 +92,11 @@ struct rk3368_pmu_grf {
 	u32 gpio0d_drv;
 	u32 gpio0l_sr;
 	u32 gpio0h_sr;
-	u32 reserved[(0x200 - 0x34) / 4 - 1];
+	u32 reserved[0x72];
 	u32 os_reg[4];
 };
-check_member(rk3368_pmu_grf, os_reg[3], 0x20c);
+check_member(rk3368_pmu_grf, gpio0h_sr, 0x34);
+check_member(rk3368_pmu_grf, os_reg[0], 0x200);
 
 /*GRF_GPIO0C_IOMUX*/
 enum {