hw/arm: Express dependencies of canon-a1100 with Kconfig

Add Kconfig dependencies for the DIGIC / canon-a1100 machine.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 40be783..abf2af0 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -32,6 +32,7 @@
 config DIGIC
     bool
     select PTIMER
+    select PFLASH_CFI02
 
 config EXYNOS4
     bool