veyron*: sdram_get_ram_code() -> ram_code()

This enables RAM_CODE_SUPPORT for veyron* platforms and uses the
generic gpio_get_binaries() function to read RAM_ID GPIOs.

BUG=chrome-os-partner:31728
BRANCH=none
TEST=built and booted on pinky

Change-Id: I7a03e42a270bec7036004375d36734bfdfe6e528
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: a325b204ff88131dfb0bdd3dfedb3c007cd98010
Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Change-Id: Ibc4c61687f1c59311cbf6b48371f9a9125dbe115
Original-Reviewed-on: https://chromium-review.googlesource.com/227249
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/9549
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/veyron_jerry/Kconfig

@@ -25,6 +25,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_SPI
 	select EC_SOFTWARE_SYNC
+	select RAM_CODE_SUPPORT
 	select SOC_ROCKCHIP_RK3288
 	select MAINBOARD_DO_NATIVE_VGA_INIT
 	select MAINBOARD_HAS_CHROMEOS