schematics: corrected SDRAM part number

ram.sch

@@ -379,7 +379,7 @@ P 5450 3500
 AR Path="/5A04F49A" Ref="U9"  Part="1" 
 AR Path="/58D6D507/5A04F49A" Ref="U2"  Part="1" 
 F 0 "U2" H 4850 4700 50  0000 C CNN
-F 1 "MT48LC4M16A2TG" H 6100 2300 50  0000 C CNN
+F 1 "MT48LC16M16A2TG" H 6150 2300 50  0000 C CNN
 F 2 "TSOP54:TSOP54" H 5450 3500 50  0001 C CIN
 F 3 "https://www.micron.com/~/media/Documents/Products/Data%20Sheet/DRAM/256Mb_sdr.pdf" H 5450 3250 50  0001 C CNN
 F 4 "www.mouser.com" H 5450 3500 60  0001 C CNN "Distributor1_URL"

ulx3s.bak

@@ -48,7 +48,7 @@ encoding utf-8
 Sheet 1 11
 Title "ULX3S"
 Date ""
-Rev "1.7.4"
+Rev "1.7.5"
 Comp "FER+RIZ+RADIONA"
 Comment1 "Root sheet"
 Comment2 ""