dt-bindings: spmi: hisilicon,hisi-spmi-controller: fix binding references

Fix up the free text binding references which were not updated when
moving the bindings out of staging and which had a leading current
directory component, respectively.

Fixes: 9bd9e0d ("mfd: hi6421-spmi-pmic: move driver from staging")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20231130173757.13011-2-johan+linaro@kernel.org
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20240507210809.3479953-3-sboyd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: jhovold

Documentation/devicetree/bindings/spmi/hisilicon,hisi-spmi-controller.yaml

@@ -14,7 +14,7 @@ description: |
   It is a MIPI System Power Management (SPMI) controller.
 
   The PMIC part is provided by
-  ./Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml.
+  Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml.
 
 allOf:
   - $ref: spmi.yaml#
@@ -48,7 +48,7 @@ patternProperties:
       PMIC properties, which are specific to the used SPMI PMIC device(s).
       When used in combination with HiSilicon 6421v600, the properties
       are documented at
-      drivers/staging/hikey9xx/hisilicon,hi6421-spmi-pmic.yaml.
+      Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml
 
 unevaluatedProperties: false