input: cyttsp-i2c: Add support for disabling ghost touch detection

Add support to treat ghost touches as normal touches incase firmware
reports all touches as ghost touches.

Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
diff --git a/include/linux/cyttsp.h b/include/linux/cyttsp.h
index d34542c..8d69031 100644
--- a/include/linux/cyttsp.h
+++ b/include/linux/cyttsp.h
@@ -480,6 +480,7 @@
 	struct cyttsp_regulator *regulator_info;
 	u8 num_regulators;
 	const char *fw_fname;
+	bool disable_ghost_det;
 #ifdef CY_USE_I2C_DRIVER
 	s32 (*init)(struct i2c_client *client);
 	s32 (*resume)(struct i2c_client *client);