printk: Rename console_start to console_resume

printk: Rename console_start to console_resume

The intent of console_start was to resume a previously suspended console,
so rename it accordingly.

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: John Ogness <john.ogness@linutronix.de>
Link: https://lore.kernel.org/r/20250226-printk-renaming-v1-4-0b878577f2e6@suse.com
[pmladek@suse.com: Fixed typo in the commit message. Updated also new drm_log.c.]
Signed-off-by: Petr Mladek <pmladek@suse.com>