DRA7xxx QSPI controller support

modulename: spi-ti-qspi.ko

configname: CONFIG_SPI_TI_QSPI

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>DRA7xxx QSPI controller support
In linux kernel since version 3.12 (release Date: 2013-11-03)  
QSPI master controller for DRA7xxx used for flash devices.
This device supports single, dual and quad read support, while
it only supports single write mode.

source code:
depends
CONFIG_SPI
CONFIG_SPI_MASTER
CONFIG_ARCH_OMAP2PLUS or CONFIG_COMPILE_TEST