rockchip: spi: rk_spi: use base variable with uintptr_t size

The fdt_addr_t and phys_addr_t size have been decoupled.
A 32bit CPU can expect 64-bit data from the device tree parser,
so use a base variable with uintptr_t size in the
rk_spi.c file.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/spi/rk_spi.c

@@ -45,7 +45,7 @@ struct rockchip_spi_plat {
 	struct dtd_rockchip_rk3288_spi of_plat;
 #endif
 	s32 frequency;		/* Default clock frequency, -1 for none */
-	fdt_addr_t base;
+	uintptr_t base;
 	uint deactivate_delay_us;	/* Delay to wait after deactivate */
 	uint activate_delay_us;		/* Delay to wait after activate */
 };