sunxi: Add DRAM_SUN8I_A33 kconfig entry

Add proper and simple kconfig option for dram_sun8i_a33.c
instead of using MACH type on Makefile.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm/mach-sunxi/Kconfig

@@ -24,6 +24,12 @@ config DRAM_SUN8I_A23
 	  Select this dram controller driver for Sun8i platforms,
 	  for A23 SOC.
 
+config DRAM_SUN8I_A33
+	bool
+	help
+	  Select this dram controller driver for Sun8i platforms,
+	  for A33 SOC.
+
 config DRAM_SUN9I
 	bool
 	help
@@ -181,6 +187,7 @@ config MACH_SUN8I_A33
 	select CPU_V7_HAS_NONSEC
 	select CPU_V7_HAS_VIRT
 	select ARCH_SUPPORT_PSCI
+	select DRAM_SUN8I_A33
 	select SUNXI_GEN_SUN6I
 	select SUPPORT_SPL
 	select ARMV7_BOOT_SEC_DEFAULT if OLD_SUNXI_KERNEL_COMPAT

arch/arm/mach-sunxi/Makefile

@@ -36,8 +36,8 @@ ifdef CONFIG_SPL_BUILD
 obj-$(CONFIG_DRAM_SUN4I)	+= dram_sun4i.o
 obj-$(CONFIG_DRAM_SUN6I)	+= dram_sun6i.o
 obj-$(CONFIG_DRAM_SUN8I_A23)	+= dram_sun8i_a23.o
+obj-$(CONFIG_DRAM_SUN8I_A33)	+= dram_sun8i_a33.o
 obj-$(CONFIG_DRAM_SUN9I)	+= dram_sun9i.o
-obj-$(CONFIG_MACH_SUN8I_A33)	+= dram_sun8i_a33.o
 obj-$(CONFIG_MACH_SUN8I_A83T)	+= dram_sun8i_a83t.o
 obj-$(CONFIG_SPL_SPI_SUNXI)	+= spl_spi_sunxi.o
 obj-$(CONFIG_SUNXI_DRAM_DW)	+= dram_sunxi_dw.o