Use address types in elf parser that match elf headers.

Necessary if a long is a different size to addresses in elf
file being parsed.
From: Jimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: Keir Fraser <keir@xensource.com>

tools/libxc/xc_load_elf.c

@@ -68,7 +68,7 @@ static int parseelfimage(const char *image,
     Elf_Ehdr *ehdr = (Elf_Ehdr *)image;
     Elf_Phdr *phdr;
     Elf_Shdr *shdr;
-    unsigned long kernstart = ~0UL, kernend=0UL, vaddr, virt_base, elf_pa_off;
+    Elf_Addr kernstart = ~0, kernend = 0, vaddr, virt_base, elf_pa_off;
     const char *shstrtab;
     char *guestinfo=NULL, *p;
     int h, virt_base_defined, elf_pa_off_defined;

xen/common/elf.c

@@ -23,7 +23,7 @@ int parseelfimage(struct domain_setup_info *dsi)
     Elf_Ehdr *ehdr = (Elf_Ehdr *)dsi->image_addr;
     Elf_Phdr *phdr;
     Elf_Shdr *shdr;
-    unsigned long kernstart = ~0UL, kernend=0UL, vaddr, virt_base, elf_pa_off;
+    Elf_Addr kernstart = ~0, kernend = 0, vaddr, virt_base, elf_pa_off;
     char *shstrtab, *guestinfo=NULL, *p;
     char *elfbase = (char *)dsi->image_addr;
     int h, virt_base_defined, elf_pa_off_defined;