kernel: armsr: remove duplicate kconfig between generic and armsr

kernel: armsr: remove duplicate kconfig between generic and armsr

These were found by running:
comm -12 <(sort target/linux/generic/config-6.18) \
	<(sort target/linux/armsr/config-6.18)

A similar process has been run between armsr/config-6.18
and armsr/armv8/config-6.18, though I have not pruned
the armv8 as much. Once the main branch switches armsr
to 6.18 we can do a more aggressive deduplication.

Signed-off-by: Mathew McBride <matt@traverse.com.au>
Link: https://github.com/openwrt/openwrt/pull/21433
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>