[PATCH] clk: stm32: add missing bitfield.h header

[Rosen Penev <rosenp@gmail.com>]

It seems some ARM header includes this and the build passes there, but
nowhere else. Note that the driver has COMPILE_TEST in depends.

Fixes: 37ae8501cdb0 ("clk: stm32: introduce clocks for STM32MP21 platfor")
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/clk/stm32/clk-stm32mp21.c | 1 +
 drivers/clk/stm32/clk-stm32mp25.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/clk/stm32/clk-stm32mp21.c b/drivers/clk/stm32/clk-stm32mp21.c
index c8a37b716bd5..bdb17419908c 100644
--- a/drivers/clk/stm32/clk-stm32mp21.c
+++ b/drivers/clk/stm32/clk-stm32mp21.c
@@ -4,6 +4,7 @@
  * Author: Gabriel Fernandez <gabriel.fernandez@foss.st.com> for STMicroelectronics.
  */
 
+#include <linux/bitfield.h>
 #include <linux/bus/stm32_firewall_device.h>
 #include <linux/clk-provider.h>
 #include <linux/io.h>
diff --git a/drivers/clk/stm32/clk-stm32mp25.c b/drivers/clk/stm32/clk-stm32mp25.c
index 52f0e8a12926..eb0bc918ecee 100644
--- a/drivers/clk/stm32/clk-stm32mp25.c
+++ b/drivers/clk/stm32/clk-stm32mp25.c
@@ -4,6 +4,7 @@
  * Author: Gabriel Fernandez <gabriel.fernandez@foss.st.com> for STMicroelectronics.
  */
 
+#include <linux/bitfield.h>
 #include <linux/bus/stm32_firewall_device.h>
 #include <linux/clk-provider.h>
 #include <linux/io.h>
-- 
2.54.0