x86/Makefile: Remove unneeded whitespaces before tabs

Align the FDINITRD line to the FDARGS one with tabs.

 [ bp: Commit message. ]
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211028121021.10384-1-ehaouas@noos.fr

arch/x86/Makefile

@@ -299,7 +299,7 @@ define archhelp
   echo  '  isoimage		- Create a boot CD-ROM image (arch/x86/boot/image.iso)'
   echo  '			  bzdisk/fdimage*/hdimage/isoimage also accept:'
   echo  '			  FDARGS="..."  arguments for the booted kernel'
-  echo  '                  	  FDINITRD=file initrd for the booted kernel'
+  echo  '			  FDINITRD=file initrd for the booted kernel'
   echo  ''
   echo  '  kvm_guest.config	- Enable Kconfig items for running this kernel as a KVM guest'
   echo  '  xen.config		- Enable Kconfig items for running this kernel as a Xen guest'