dt-bindings: pinctrl: update pcie/pwm/spi bindings for MT7986 SoC

Allow multiple items for pcie, pwm and spi function.
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221106080114.7426-2-linux@fw-web.deSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/mediatek,mt7986-pinctrl.yaml

@@ -197,7 +197,9 @@ patternProperties:
             then:
               properties:
                 groups:
-                  enum: [pcie_clk, pcie_wake, pcie_pereset]
+                  items:
+                    enum: [pcie_clk, pcie_wake, pcie_pereset]
+                  maxItems: 3
           - if:
               properties:
                 function:
@@ -205,7 +207,9 @@ patternProperties:
             then:
               properties:
                 groups:
-                  enum: [pwm0, pwm1_0, pwm1_1]
+                  items:
+                    enum: [pwm0, pwm1_0, pwm1_1]
+                  maxItems: 2
           - if:
               properties:
                 function:
@@ -213,7 +217,9 @@ patternProperties:
             then:
               properties:
                 groups:
-                  enum: [spi0, spi0_wp_hold, spi1_0, spi1_1, spi1_2, spi1_3]
+                  items:
+                    enum: [spi0, spi0_wp_hold, spi1_0, spi1_1, spi1_2, spi1_3]
+                  maxItems: 2
           - if:
               properties:
                 function: