W1-EEPROM: add sandbox driver

Add a sandbox driver for a one wire EEPROM memory

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
diff --git a/drivers/w1-eeprom/Makefile b/drivers/w1-eeprom/Makefile
index 3f4aa13..03cc4c8 100644
--- a/drivers/w1-eeprom/Makefile
+++ b/drivers/w1-eeprom/Makefile
@@ -2,3 +2,4 @@
 
 obj-$(CONFIG_W1_EEPROM_DS24XXX) += ds24xxx.o
 
+obj-$(CONFIG_W1_EEPROM_SANDBOX) += eep_sandbox.o