mtd: spi: renesas: Enable SPI_FLASH_SFDP_SUPPORT

Enable support for parsing and auto discovery of parameters for
SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP)
tables as per JESD216 standard.

Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Cong Dang <cong.dang.xn@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> # Make SFDP the default unconditionally