Merge tag 'i2cfixes-for-v2024-01-rc2' of https://source.denx.de/u-boot/custodians/u-boot-i2c

i2c updates for v2024.01-rc2

- nuvoton: support standard/fast/fast plus mode
- bootcount: remove legacy i2c driver and implement
  DM based version

Bugfixes:
- designware_i2c: adjust timing calculation
  SPL probing failed on the StarFive VisionFive 2 board
  Heinrich fixed this, by syncing timing calculation with
  linux implementation.

include/i2c.h

@@ -537,6 +537,18 @@ int i2c_get_chip(struct udevice *bus, uint chip_addr, uint offset_len,
 int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len,
 			    struct udevice **devp);
 
+/**
+ * i2c_get_chip_by_phandle() - get a device to use to access a chip
+ *			       based on a phandle property pointing to it
+ *
+ * @parent: Parent device containing the phandle pointer
+ * @name:   Name of phandle property in the parent device node
+ * @devp:   Returns pointer to new device or NULL if not found
+ * Return:  0 on success, -ve on failure
+ */
+int i2c_get_chip_by_phandle(const struct udevice *parent, const char *prop_name,
+			    struct udevice **devp);
+
 /**
  * i2c_chip_of_to_plat() - Decode standard I2C platform data
  *