Revert "PM: domains: Restore comment indentation for generic_pm_domain.child_links"

This reverts commit e4e88f74 which is
commit afb0367a80553e795e7ad055299096544454f3f6 upstream.

It is not needed in Android systems, and it breaks the ABI for no real
reason, so revert it.

Bug: 161946584
Change-Id: I94b151ecbd6df12ad4996bce68ac447545640183
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>