hwmon: Remove generic pwm tachometer

Remove HW monitor based generic PWM tachometer
driver as it is not required.

Along with driver, remove DT binding document and
dkms entry.

Bug 4061216

Change-Id: I28e1bf9d5223ad7f56332d90501ea7ddb55cd366
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2883862
Reviewed-by: Jonathan Hunter <jonathanh@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

Documentation/devicetree/bindings/hwmon/generic-pwm-tachometer.yaml

@@ -1,46 +0,0 @@
-# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/hwmon/generic-pwm-tachometer.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Generic PWM based tachometer HW monitor driver
-
-maintainers:
-  - Laxman Dewangan <ldewangan@nvidia.com>
-
-description: |
-  Generic PWM based tachometer driver which captures the PWM signal and reports
-  the speed of the device which generates the PWM signal. This helps in monitor
-  the speed of fan.
-
-properties:
-  compatible:
-    enum:
-      - generic-pwm-tachometer
-
-  pwms:
-    maxItems: 1
-    description: |
-      This property contains the phandle of the PWM controller which capture the
-      PWM signal.
-
-required:
-  - compatible
-  - pwms
-
-additionalProperties: false
-
-examples:
-  - |
-    tegra_tachometer: tachometer@39c0000 {
-       reg = <0x39c0000 0x0>;
-       #pwm-cells = <2>;
-       /* Other properties of tachometer */
-    };
-
-    generic_pwm_tachometer {
-       compatible = "generic-pwm-tachometer";
-       pwms = <&tegra_tachometer 0 1000000>;
-    };
-...