ARM: drop experimental status of SMP_ON_UP
ARM: drop experimental status of SMP_ON_UP

SMP_ON_UP has been around for a while, and seems to be well-proven now.
Drop the EXPERIMENTAL tag from the option.

Signed-off-by: Russell King <f6aa0246ff943bfa8602cdf60d40c481b38ed232@arm.linux.org.uk>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs