stm32: stm32f4: move flash driver to mtd driver location

Same flash driver can be used by other stm32 families like stm32f7.
Better place for this driver would be mtd driver location.

Signed-off-by

stm32: stm32f4: move flash driver to mtd driver location

Same flash driver can be used by other stm32 families like stm32f7.
Better place for this driver would be mtd driver location.

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>

show more ...