sunxi: s/sun8i/sun8i_a23/

This is a preparation patch for adding A33 support, which will have a
mach name of sun8i-a33.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/configs/Ippo_q8h_v1_2_defconfig b/configs/Ippo_q8h_v1_2_defconfig
index e003b4c..d9455c8 100644
--- a/configs/Ippo_q8h_v1_2_defconfig
+++ b/configs/Ippo_q8h_v1_2_defconfig
@@ -11,7 +11,7 @@
 CONFIG_VIDEO_LCD_BL_PWM="PH0"
 CONFIG_ARM=y
 CONFIG_ARCH_SUNXI=y
-CONFIG_MACH_SUN8I=y
+CONFIG_MACH_SUN8I_A23=y
 CONFIG_DRAM_CLK=432
 # zq = 0xf74a
 CONFIG_DRAM_ZQ=63306