ARM: omap2: pmic-cpcap: fix maximum voltage to be consistent with defaults on xt875

stable inclusion
from stable-5.10.9
commit 54cfdd65070e51bd4ff55c7cef105f12f9c5d264
bugzilla: 47457

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[ Upstream commit c0bc969c ]

xt875 comes up with a iva voltage of 1375000 and android runs at this too. fix
maximum voltage to be consistent with this.

Signed-off-by: Carl Philipp Klemm <philipp@uvos.xyz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>