RMX1921: sepolicy: Allow system_app to read /proc/pagetypeinfo

avc: denied { read } for name="pagetypeinfo" dev="proc" ino=4026543033 scontext=u:r:system_app:s0 tcontext=u:object_r:proc_pagetypeinfo:s0 tclass=file permissive=0

Change-Id: I16465eb9acca9ff64a755d47f86f4ff424ebe4de
Signed-off-by: kaderbava <ksbava7325@gmail.com>