configure: Whitespace changes to improve readability

Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

configure.ac

@@ -113,18 +113,10 @@ case "$target_cpu" in
                 target_cpu=mips
 		machine_CPPFLAGS="$machine_CPPFLAGS -DGRUB_CPU_MIPS=1"
 		;;
-  arm*)
-		target_cpu=arm
-		;;
-  aarch64*)
-		target_cpu=arm64
-		;;
-  riscv32*)
-		target_cpu=riscv32
-		;;
-  riscv64*)
-		target_cpu=riscv64
-		;;
+  arm*)		target_cpu=arm ;;
+  aarch64*)	target_cpu=arm64 ;;
+  riscv32*)	target_cpu=riscv32 ;;
+  riscv64*)	target_cpu=riscv64 ;;
 esac
 
 # Specify the platform (such as firmware).
@@ -1591,7 +1583,6 @@ fi
   if test x"$grub_emu_pci_excuse" = x ; then
     enable_grub_emu_pci=yes
   else
-
     enable_grub_emu_pci=no
   fi