[PATCH i2c-tools] i2cdetect: only use "newer" I2C_FUNC_* flags if they exist

[Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>]

This allows i2cdetect to be compiled for older kernels.

Reported-by: "Poeche, Uwe" <uwe.poeche@xxxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---

Jean, do you mind these #ifdefs in the code?

 tools/i2cdetect.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/i2cdetect.c b/tools/i2cdetect.c
index 5ab4ea4..2d4d3b4 100644
--- a/tools/i2cdetect.c
+++ b/tools/i2cdetect.c
@@ -160,12 +160,16 @@ static const struct func all_func[] = {
 	  .name = "I2C Block Write" },
 	{ .value = I2C_FUNC_SMBUS_READ_I2C_BLOCK,
 	  .name = "I2C Block Read" },
+#if defined(I2C_FUNC_SMBUS_HOST_NOTIFY)
 	{ .value = I2C_FUNC_SMBUS_HOST_NOTIFY,
 	  .name = "SMBus Host Notify" },
+#endif
 	{ .value = I2C_FUNC_10BIT_ADDR,
 	  .name = "10-bit addressing" },
+#if defined(I2C_FUNC_SLAVE)
 	{ .value = I2C_FUNC_SLAVE,
 	  .name = "Target mode" },
+#endif
 	{ .value = 0, .name = "" }
 };
 
-- 
2.30.2