Shrinked spi_slave and spi_flash code with respect to added flash features.

V4: - Use braces in bit fileds m << n becomes (m << n) - Use mode instead of "mode_bits" V3: - Return -ENOMEM for calloc fails V2: - Divide dual_flash code into two patches.

Jagannadha Sutradharudu Teki (5): sf: ops: Squash the malloc+memset combo sf: Optimize flash features code sf: Use slave mode for dual_flash connection doc: SPI: Update the dual_flash info sf: Update bank configuration

doc/SPI/README.dual-flash | 5 +- doc/SPI/README.sf-features | 124 ++++++++++++++++++++++++++++++ drivers/mtd/spi/sf.c | 4 +- drivers/mtd/spi/sf_internal.h | 1 - drivers/mtd/spi/sf_ops.c | 16 ++-- drivers/mtd/spi/sf_params.c | 172 +++++++++++++++++++++--------------------- drivers/mtd/spi/sf_probe.c | 101 ++++++++++++------------- include/spi.h | 42 ++++------- include/spi_flash.h | 34 ++++----- 9 files changed, 302 insertions(+), 197 deletions(-) create mode 100644 doc/SPI/README.sf-features