drm/amdgpu: bump minor version number for DEV_INFO and SENSOR IOCTLs update

Update AMDGPU_INFO_DEV_INFO IOCTL for minimum engine and memory clock.
And update AMDGPU_INFO_SENSOR IOCTL for PEAK_PSTATE engine and memory clock.
User applications can better utilize these IOCTLs to get needed informations.

Increase the minor version number to indicate that the new flags are
available.

Proposed mesa patch:
https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/278

Signed-off-by: Evan Quan <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

···
  * - 3.46.0 - To enable hot plug amdgpu tests in libdrm
  * - 3.47.0 - Add AMDGPU_GEM_CREATE_DISCARDABLE and AMDGPU_VM_NOALLOC flags
  * - 3.48.0 - Add IP discovery version info to HW INFO
- *   3.49.0 - Add gang submit into CS IOCTL
+ * - 3.49.0 - Add gang submit into CS IOCTL
+ * - 3.50.0 - Update AMDGPU_INFO_DEV_INFO IOCTL for minimum engine and memory clock
+ *            Update AMDGPU_INFO_SENSOR IOCTL for PEAK_PSTATE engine and memory clock
  */
 #define KMS_DRIVER_MAJOR	3
-#define KMS_DRIVER_MINOR	49
+#define KMS_DRIVER_MINOR	50
 #define KMS_DRIVER_PATCHLEVEL	0
 
 int amdgpu_vram_limit;