coresight: etm4x: Set skip_power_up in etm4_init_arch_data function

coresight: etm4x: Set skip_power_up in etm4_init_arch_data function

[ Upstream commit 1bbe0a247e5d72f723daeecf41596bfa99e199f1 ]

skip_power_up is used in etm4_init_arch_data when set lpoverride. So
need to set the value of it before calling using it.

Fixes: 5214b563588e ("coresight: etm4x: Add support for sysreg only devices")
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20240131105423.9519-1-quic_jinlmao@quicinc.com
Signed-off-by: Sasha Levin <sashal@kernel.org>