linux-purism-librem5: sync kconfig

With the latest kernel bump the config was updated based on the output of:

make ARCH="$_carch" CC="${CC:-gcc}" defconfig KBUILD_DEFCONFIG=librem5_defconfig

but in the end not every change was commited as some changes where backed out to fix a breakage.

This commit re-runs the command and commits the diff, with the exception of this which causesd failures for me:

--- a/device/main/linux-purism-librem5/config-purism-librem5.aarch64
+++ b/device/main/linux-purism-librem5/config-purism-librem5.aarch64
@@ -7295,7 +7295,13 @@ CONFIG_LSM_MMAP_MIN_ADDR=32768
 CONFIG_HARDENED_USERCOPY=y
 CONFIG_FORTIFY_SOURCE=y
 # CONFIG_STATIC_USERMODEHELPER is not set
-# CONFIG_SECURITY_SELINUX is not set
+CONFIG_SECURITY_SELINUX=y
+CONFIG_SECURITY_SELINUX_BOOTPARAM=y
+CONFIG_SECURITY_SELINUX_DEVELOP=y
+CONFIG_SECURITY_SELINUX_AVC_STATS=y
+CONFIG_SECURITY_SELINUX_SIDTAB_HASH_BITS=9
+CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE=256
+# CONFIG_SECURITY_SELINUX_DEBUG is not set
 # CONFIG_SECURITY_SMACK is not set
 # CONFIG_SECURITY_TOMOYO is not set
 CONFIG_SECURITY_APPARMOR=y