Add more sphal search paths

Fixes the following error:

> E vndksupport: Could not load /vendor/lib64/hw/android.hardware.graphics.mapper@2.0-impl.so from sphal namespace: dlopen failed: library "android.hardware.graphics.mapper@2.0.so" not found.

note:
Android error was: "Can't play this video"
Signed-off-by: Lakshay <lakshaygarg.in@gmail.com>
Signed-off-by: steadfasterX <steadfasterX@gmail.com>

configs/ld.config.txt_swcodec

@@ -68,6 +68,9 @@ namespace.sphal.visible = true
 namespace.sphal.search.paths  = /odm/${LIB}
 namespace.sphal.search.paths += /vendor/${LIB}
 
+# Legacy devices do not have vndk-sp, so add /system/${LIB} to search path instead
+namespace.sphal.search.paths += /system/${LIB}
+
 namespace.sphal.permitted.paths  = /odm/${LIB}
 namespace.sphal.permitted.paths += /vendor/${LIB}
 namespace.sphal.permitted.paths += /vendor/${LIB}/hw