mtd: spi-nor: move "wait-till-ready" checks into erase/write functions

We shouldn't have *every* function checking if a previous write is
complete; this should be done synchronously after each write/erase.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
1 file changed