bsps/xqspipsu: Ensure NOR writes align

This change causes NOR writes to be broken according to page boundaries.
Writes across page boundaries cause the writes beyond the boundary to
fail silently. This also introduces a new function that will explicitly
write pages.

bsps/shared/dev/spi/xqspipsu-flash-helper.c

@@ -333,7 +333,7 @@ static int FlashReadID(XQspiPsu *QspiPsuPtr)
   return XST_SUCCESS;
 }
 
-int QspiPsu_NOR_Write(
+int QspiPsu_NOR_Write_Page(
   XQspiPsu *QspiPsuPtr,
   u32 Address,
   u32 ByteCount,
@@ -475,6 +475,51 @@ int QspiPsu_NOR_Write(
   return 0;
 }
 
+int QspiPsu_NOR_Write(
+  XQspiPsu *QspiPsuPtr,
+  u32 Address,
+  u32 ByteCount,
+  u8 *WriteBfrPtr
+)
+{
+  int Status;
+  size_t ByteCountRemaining = ByteCount;
+  unsigned char *WriteBfrPartial = WriteBfrPtr;
+  uint32_t AddressPartial = Address;
+  uint32_t PageSize = Flash_Config_Table[FCTIndex].PageSize;
+  if(QspiPsuPtr->Config.ConnectionMode == XQSPIPSU_CONNECTION_MODE_PARALLEL) {
+    PageSize *= 2;
+  }
+
+  while (ByteCountRemaining > 0) {
+    /* Get write boundary */
+    size_t WriteChunkLen = RTEMS_ALIGN_UP(AddressPartial + 1, PageSize);
+
+    /* Get offset to write boundary */
+    WriteChunkLen -= (size_t)AddressPartial;
+
+    /* Cap short writes */
+    if (WriteChunkLen > ByteCountRemaining) {
+      WriteChunkLen = ByteCountRemaining;
+    }
+
+    Status = QspiPsu_NOR_Write_Page(
+      QspiPsuPtr,
+      AddressPartial,
+      WriteChunkLen,
+      WriteBfrPartial
+    );
+    if ( Status != XST_SUCCESS ) {
+      return Status;
+    }
+
+    ByteCountRemaining -= WriteChunkLen;
+    AddressPartial += WriteChunkLen;
+    WriteBfrPartial += WriteChunkLen;
+  }
+  return Status;
+}
+
 int QspiPsu_NOR_Erase(
   XQspiPsu *QspiPsuPtr,
   u32 Address,