lib/spd_bin: Add LPDDR5X dram_type in use_ddr4_params

For dram_type 21 the switch case in use_ddr4_params function falls to
default. This adds SPD_DRAM_LPDDR5X dram_type case to switch case block
for dram_type 21 in the function.

With this patch below NOTE will not be observed in the log:
    [NOTE ]  Defaulting to using DDR4 params. Please add dram_type check for 21 to use_ddr4_params

BUG=None
BRANCH=None
TEST=Boot brox SKU1/SKU2 and verify logs for default case

Change-Id: Id78ef90c0dc2e869c1f0424674b982ba64ba3939
Signed-off-by: Ashish Kumar Mishra <ashish.k.mishra@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81437
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Shelley Chen <shchen@google.com>

src/lib/spd_bin.c

@@ -35,6 +35,7 @@ static bool use_ddr4_params(int dram_type)
 	case SPD_DRAM_DDR4:
 	case SPD_DRAM_DDR5:
 	case SPD_DRAM_LPDDR5:
+	case SPD_DRAM_LPDDR5X:
 	case SPD_DRAM_LPDDR4:
 	case SPD_DRAM_LPDDR4X:
 		return true;