Platform/Loongson: Modify loongarch uefi firmware size

After the loongarch flash block size is changed from 128K to 256K,
qemu requires that the UEFI firmware size be aligned with the flash block size(256K).
Otherwise, the firmware cannot be loaded,
Use the following code to resolve the old firmware loading problem:
mv QEMU_EFI.fd  QEMU_EFI.fd-bak
cat QEMU_EFI.fd-bak  /dev/zero | head -c 16m > ./QEMU_EFI.fd
mv QEMU_VARS.fd  QEMU_VARS.fd-bak
cat QEMU_VARS.fd-bak /dev/zero | head -c 16m > ./QEMU_VARS.fd

For the new firmware, we refer to other architecture UEFI and
set the UEFI firmware size to align with the flash block size(256K).

So for this patch, we set the UEFI firmware size to 256K alignment.

Cc: Bibo Mao <[email protected]>
Cc: Chao Li <[email protected]>
Signed-off-by: Xianglai Li <[email protected]>

Platform/Loongson/LoongArchQemuPkg/Loongson.fdf.inc

@@ -18,12 +18,12 @@ DEFINE FD_SIZE                    = 0x400000
 #flash code layout
 #Set Sec base address and size in flash
 DEFINE SECFV_OFFSET               = 0x00000000
-DEFINE SECFV_SIZE                 = 0x00010000
+DEFINE SECFV_SIZE                 = 0x00040000
 
 #Set Pei base address and size in flash
-DEFINE PEIFV_OFFSET               = 0x00010000
+DEFINE PEIFV_OFFSET               = 0x00040000
 DEFINE PEIFV_SIZE                 = 0x00040000
 
 #Set Dxe base address and size in flash
-DEFINE DXEFV_OFFSET               = 0x00050000
-DEFINE DXEFV_SIZE                 = 0x00350000
+DEFINE DXEFV_OFFSET               = 0x00080000
+DEFINE DXEFV_SIZE                 = 0x00380000

Platform/Loongson/LoongArchQemuPkg/VarStore.fdf.inc

@@ -10,8 +10,8 @@
 BaseAddress   = 0x0
 Size          = 0x1000000
 ErasePolarity = 1
-BlockSize     = 0x20000
-NumBlocks     = 128
+BlockSize     = 0x40000
+NumBlocks     = 64
 
 0x00000000|0x00040000
 #NV_VARIABLE_STORE