Define the PXE 2nd stage loader in the beginning of the file
Define the PXE 2nd stage loader in the beginning of the file

Make it easier to change the PXE 2nd stage loader.

Conflicts:
	netboot.c

CyanogenMod/android_external_uefi_shim,rhinstaller/shim,android-ia/platform_external_uefi_shim,CyanogenMod/android_external_uefi_shim,rhinstaller/shim,rhinstaller/shim,CyanogenMod/android_external_uefi_shim,android-ia/platform_external_uefi_shim,android-ia/platform_external_uefi_shim