Input: raydium_i2c_ts - fix error codes in raydium_i2c_boot_trigger()

These functions are supposed to return negative error codes but instead
it returns true on failure and false on success.  The error codes are
eventually propagated back to user space.

Fixes: 48a2b783 ("Input: add Raydium I2C touchscreen driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200303101306.4potflz7na2nn3od@kili.mountain
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/raydium_i2c_ts.c

@@ -432,7 +432,7 @@ static int raydium_i2c_write_object(struct i2c_client *client,
 	return 0;
 }
 
-static bool raydium_i2c_boot_trigger(struct i2c_client *client)
+static int raydium_i2c_boot_trigger(struct i2c_client *client)
 {
 	static const u8 cmd[7][6] = {
 		{ 0x08, 0x0C, 0x09, 0x00, 0x50, 0xD7 },
@@ -457,10 +457,10 @@ static bool raydium_i2c_boot_trigger(struct i2c_client *client)
 		}
 	}
 
-	return false;
+	return 0;
 }
 
-static bool raydium_i2c_fw_trigger(struct i2c_client *client)
+static int raydium_i2c_fw_trigger(struct i2c_client *client)
 {
 	static const u8 cmd[5][11] = {
 		{ 0, 0x09, 0x71, 0x0C, 0x09, 0x00, 0x50, 0xD7, 0, 0, 0 },
@@ -483,7 +483,7 @@ static bool raydium_i2c_fw_trigger(struct i2c_client *client)
 		}
 	}
 
-	return false;
+	return 0;
 }
 
 static int raydium_i2c_check_path(struct i2c_client *client)