SQUASHFS_DECOMP_MULTI_PERCPU is selected by SQUASHFS_COMPILE_DECOMP_MULTI_PERCPU, so add it. Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn> Link: https://github.com/openwrt/openwrt/pull/20140 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>