spi: mxs: Use list_for_each_entry to iterate over transfer list
spi: mxs: Use list_for_each_entry to iterate over transfer list

We don't modify the list entry while iterating the transfer list.
So use list_for_each_entry instead of list_for_each_entry_safe.

Signed-off-by: Axel Lin <b6ffd6973e972cb999e8e535ab74da7fee0c035f@ingics.com>
Acked-by: Marek Vasut <f40600653b33f5282fa4c5daf377dfc444fb4625@denx.de>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs