MIPS: brcmstb: add support for devicetree

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: use original bcmgenet driver with devicetree

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: add uart devicetree

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: add usb host devicetree

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: add sdhci devicetree

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: add ahci devicetree

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: remove dev-flash.c

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: add missing #ifdef and #endif

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: remove ARCH_REQUIRE_GPIOLIB

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
MIPS: brcmstb: use COMMON_CLK

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>