ram: rk3399: add missing high row detection

For 2 GB LPDDR4 single-rank RAM with 16 rows, the Rockchip ddr init bin
prints:
"Bus Width=32 Col=10 Bank=8 Row=16 CS=1 Die Bus-Width=16 Size=2048MB"

U-Boot TPL prints:
"BW=32 Col=10 Bk=8 CS0 Row=16/15 CS=1 Die BW=16 Size=2048MB"

Add missing high row detection so that U-Boot TPL prints Row=16, same as
the Rockchip ddr init bin:
"BW=32 Col=10 Bk=8 CS0 Row=16 CS=1 Die BW=16 Size=2048MB"

Signed-off-by: Jonathan Liu <net147@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

drivers/ram/rockchip/sdram_rk3399.c

@@ -2749,6 +2749,8 @@ static u64 dram_detect_cap(struct dram_info *dram,
 	/* detect cs1 row */
 	sdram_detect_cs1_row(cap_info, params->base.dramtype);
 
+	sdram_detect_high_row(cap_info);
+
 	/* detect die bw */
 	sdram_detect_dbw(cap_info, params->base.dramtype);