mb/**/{devicetree,overridetree}.cb: Indent with tabs

Use tabs instead of eight (sometimes less) spaces.

Change-Id: Ic3d61f5210d21d9613fc50b47b90af71f544169a
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44113
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb
index 8e1f954..bf3b7bd 100644
--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb
@@ -366,19 +366,19 @@
 			end
 		end # I2C #1
 		device pci 15.2 on
-                        chip drivers/i2c/hid
-                                register "generic.hid" = ""WCOM005C""
-                                register "generic.desc" = ""WCOM Digitizer""
-                                register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_D1_IRQ)"
+			chip drivers/i2c/hid
+				register "generic.hid" = ""WCOM005C""
+				register "generic.desc" = ""WCOM Digitizer""
+				register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_D1_IRQ)"
 				register "generic.probed" = "1"
 				register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D3)"
 				register "generic.reset_delay_ms" = "20"
 				register "generic.has_power_resource" = "1"
 				register "generic.disable_gpio_export_in_crs" = "1"
 				register "generic.wake" = "GPE0_DW2_01"
-                                register "hid_desc_reg_offset" = "0x1"
-                                device i2c 0x9 on end
-                        end
+				register "hid_desc_reg_offset" = "0x1"
+				device i2c 0x9 on end
+			end
 			chip drivers/generic/gpio_keys
 				register "name" = ""PENH""
 				register "gpio" = "ACPI_GPIO_INPUT_ACTIVE_HIGH(GPP_E8)"