rv1126b: ddr: Update to v1.03 250613

Build from:
c4d8224017 dram_init: rv1126b: Update to v1.03

Update feature:
ba5a5c1823 drivers: ram: rv1126b: Fix refresh_margin
df66fde065 drivers: ram: rv11

rv1126b: ddr: Update to v1.03 250613

Build from:
c4d8224017 dram_init: rv1126b: Update to v1.03

Update feature:
ba5a5c1823 drivers: ram: rv1126b: Fix refresh_margin
df66fde065 drivers: ram: rv1126b: Set reg_calcs_sel after disable read gate
f09135dcff drivers: ram: rv1126b: Support DDR4 of new version RV1126B(P)
662523691e dram_init: rv1126b: add uart iomux section in loader param

Change-Id: I95afb54e1741a82eed846962732818294e8b383c
Signed-off-by: Wesley Yao <wesley.yao@rock-chips.com>

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