Remove all Kconfig symbols dropped in v5.2-rc1
    
    There are 24 Kconfig symbols referenced in the files used for
    configuration generation and in the shipped .config files that were
    dropped in upstream v5.2-rc1. The references to these symbols can be
    safely removed.
    
    These symbols are:
        CONFIG_BACKLIGHT_LCD_SUPPORT
        CONFIG_CHARGER_LTC3651
        CONFIG_CHASH_SELFTEST
        CONFIG_CHASH_STATS
        CONFIG_CRYPTO_DEV_MXC_SCC
        CONFIG_DEBUG_PI_LIST
        CONFIG_EXYNOS5420_MCPM
        CONFIG_INET6_XFRM_MODE_BEET
        CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION
        CONFIG_INET6_XFRM_MODE_TRANSPORT
        CONFIG_INET6_XFRM_MODE_TUNNEL
        CONFIG_INET_XFRM_MODE_BEET
        CONFIG_INET_XFRM_MODE_TRANSPORT
        CONFIG_INET_XFRM_MODE_TUNNEL
        CONFIG_MTD_NAND
        CONFIG_MTD_NAND_ECC_BCH
        CONFIG_MTD_NAND_ECC_SMC
        CONFIG_MTK_MMC
        CONFIG_NET_DSA_LEGACY
        CONFIG_NFT_CHAIN_ROUTE_IPV4
        CONFIG_NFT_CHAIN_ROUTE_IPV6
        CONFIG_R8822BE
        CONFIG_TRACING_EVENTS_GPIO
        CONFIG_VIDEO_ZORAN
    
    Signed-off-by: Paul Bolle <pebolle@tiscali.nl>