drivers: hwinfo: Exclude SYSCON driver on LPC51U68

The hwinfo_mcux_syscon driver isn't relavant for LPC51U68 SoC
series. Add a Kconfig exclusion so the driver isn't available
on LPC51U68 SoC.

Signed-off-by: Navin Sankar Velliangiri <navin@linumiz.com>
1 file changed