Adjust alignment of PageShifts

PageShifts is only accessed with "ADRL xx, PageShifts-1"; adjust the
alignment so that PageShifts-1 is word aligned, to try and avoid us
hitting any ADRL range limits (which has happened with the runtime
ShortDesc vs. LongDesc selection from future commits)

s/ARM600

@@ -224,9 +224,11 @@ PPLAccess            ; EL1EL0
         GenPPLAccess 2_101101
         DCD     -1
 
+        =       0                       ; So PageShifts-1 is word aligned
 PageShifts
         =       12, 13, 0, 14           ; 1 2 3 4
         =       0,  0,  0, 15           ; 5 6 7 8
+        ALIGN
 
         LTORG
 

s/VMSAv6

@@ -238,9 +238,11 @@ PPLAccess            ; EL1EL0
         GenPPLAccess 2_100000
         DCD     -1
 
+        =       0                       ; So PageShifts-1 is word aligned
 PageShifts
         =       12, 13, 0, 14           ; 1 2 3 4
         =       0,  0,  0, 15           ; 5 6 7 8
+        ALIGN
 
         LTORG