meta-mchp-polarfire-soc: conf: machines: add whitespace with :append operator

Add a leading whitespace in MACHINE_FEATURES:append in all PolarFire SoC
machine configuration files. This ensures that the appended content is
properly separated from the existing value, preventing concatenation
errors (e.g., "feature1feature2"). The whitespace is required before the
appended content when using the :append operator in BitBake recipes.

Signed-off-by: Valentina Fernandez <[email protected]>

Author: vfalanis

meta-mchp-polarfire-soc/meta-mchp-polarfire-soc-bsp/conf/machine/mpfs-icicle-kit-amp.conf

@@ -7,7 +7,7 @@ require include/mpfs-common.inc
 
 MACHINE_TYPE = "amp"
 
-MACHINE_FEATURES:append = "pci usbgadget usbhost wifi"
+MACHINE_FEATURES:append = " pci usbgadget usbhost wifi"
 
 RISCV_SBI_FDT ?=  "mpfs-icicle-kit.dtb"
 KERNEL_DTC_FLAGS += "-@"

meta-mchp-polarfire-soc/meta-mchp-polarfire-soc-bsp/conf/machine/mpfs-icicle-kit-nand.conf

@@ -7,7 +7,7 @@ require include/mpfs-common.inc
 
 MACHINE_TYPE = "smp"
 
-MACHINE_FEATURES:append = "pci usbgadget usbhost wifi"
+MACHINE_FEATURES:append = " pci usbgadget usbhost wifi"
 
 RISCV_SBI_FDT ?=  "mpfs-icicle-kit.dtb"
 KERNEL_DTC_FLAGS += "-@"

meta-mchp-polarfire-soc/meta-mchp-polarfire-soc-bsp/conf/machine/mpfs-icicle-kit-nor.conf

@@ -7,7 +7,7 @@ require include/mpfs-common.inc
 
 MACHINE_TYPE = "smp"
 
-MACHINE_FEATURES:append = "pci usbgadget usbhost wifi"
+MACHINE_FEATURES:append = " pci usbgadget usbhost wifi"
 
 RISCV_SBI_FDT ?=  "mpfs-icicle-kit.dtb"
 KERNEL_DTC_FLAGS += "-@"

meta-mchp-polarfire-soc/meta-mchp-polarfire-soc-bsp/conf/machine/mpfs-video-kit.conf

@@ -6,7 +6,7 @@
 require include/mpfs-common.inc
 MACHINE_TYPE = "smp"
 
-MACHINE_FEATURES:append = "pci usbgadget usbhost wifi"
+MACHINE_FEATURES:append = " pci usbgadget usbhost wifi"
 
 RISCV_SBI_FDT ?=  "mpfs-video-kit.dtb"
 KERNEL_DTC_FLAGS += "-@"