x86: Rename e820entry to e820_entry

This changes 'struct e820entry' to 'struct e820_entry' to conform
with the coding style.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index 8355c34..9d29f82 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -12,7 +12,7 @@
 #ifndef __ASSEMBLY__
 #include <linux/types.h>
 
-struct e820entry {
+struct e820_entry {
 	__u64 addr;	/* start of memory segment */
 	__u64 size;	/* size of memory segment */
 	__u32 type;	/* type of memory segment */
@@ -25,6 +25,6 @@
 
 /* Implementation defined function to install an e820 map */
 unsigned int install_e820_map(unsigned int max_entries,
-			      struct e820entry *);
+			      struct e820_entry *);
 
 #endif /* _ASM_X86_E820_H */