[PATCH 1/1 v3] driver:mtd:spi-nor: Add quad I/O support for Micron spi nor

[bpqw]

>This patch adds code which enables Quad I/O mode on Micron SPI NOR flashes.

>For Micron SPI NOR flash, enabling or disabling quad I/O 
>protocol is controlled by EVCR (Enhanced Volatile Configuration
>Register), Quad I/O protocol bit 7.When EVCR bit 7 is reset to 0,
>the SPI NOR flash will operate in quad I/O mode.

>Signed-off-by: bean huo <beanhuo at micron.com>
>Acked-by: Marek Vasut <marex at denx.de>

Hi,Brian
How about this patch?if can be accepted?
It has been long time.