powerpc/motorola_power: Link all text sections into the executable image

- The change to building all code with code and data sections means
  we have a section per function. Make sure all functions are
  placed in the text section.

Closes #4266

bsps/powerpc/motorola_powerpc/bootloader/ppcboot.lds

@@ -38,6 +38,7 @@ SECTIONS
     BYTE(0x75); BYTE(0x78); /* Partition name */
     . = 0x400;
     *(.text)
+    *(.text*)
     *(.sdata2)
     *(.rodata)
     *(.rodata*)
@@ -98,4 +99,3 @@ SECTIONS
     *(.comment)
   }
 }
-