fw/apps/prf/mfg_als: adjust getafix valid range

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>

Author: gmarull

src/fw/apps/prf_apps/mfg_als_app.c

@@ -24,9 +24,8 @@
 #define ALS_MIN_VALUE 100
 #define ALS_MAX_VALUE 250
 #elif PLATFORM_GETAFIX
-// FIXME(GETAFIX): Adjust to narrower range once validated
-#define ALS_MIN_VALUE 5000
-#define ALS_MAX_VALUE 20000
+#define ALS_MIN_VALUE 14500
+#define ALS_MAX_VALUE 15500
 #else
 #define ALS_MIN_VALUE 0
 #define ALS_MAX_VALUE 65535