um: x86: clean up elf specific definitions

The file arch/x86/um/asm/module.h is equivalent to the definition of
asm-generic.  Thus this commit cleans up to use it.

Signed-off-by: Hajime Tazaki <thehajime@gmail.com>
Link: https://patch.msgid.link/2d70a0ed79ee0a0bef80ad4790063f4833dd9bed.1737348399.git.thehajime@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Author: thehajime

arch/um/include/asm/Kbuild

@@ -13,6 +13,7 @@ generic-y += irq_work.h
 generic-y += kdebug.h
 generic-y += mcs_spinlock.h
 generic-y += mmiowb.h
+generic-y += module.h
 generic-y += module.lds.h
 generic-y += param.h
 generic-y += parport.h